# Telvio — full text of the primary pages > Generated at build time from the rendered pages, so nothing here can disagree > with what a reader sees. This file carries the product, pricing, dialling and > policy pages in full. The programmatic families are far too large to inline: > every country page has its own markdown twin at /index.md, and the data > behind them is at https://telvio.app/api/v1/openapi.json. Index of the whole site: https://telvio.app/llms.txt Generated: 2026-09-11 **Telvio — Cheap International Calls & Calling App for WiFi** > Telvio is a mobile VoIP app for cheap international calls over WiFi or mobile data. Call the United States from $0.07/min and the United Kingdom from $0.03/min. Source: https://telvio.app/ · updated: 2026-08-19 From $0.03/min to 200+ countries # Call anywhere. Pay less. International calls over WiFi or mobile data. Real phone numbers in 200+ countries. No roaming. No registration. No contracts. [Download Free](https://telvio.app/download/) [View rates](https://telvio.app/rates/) 1 free minute Minutes never expire No account needed Free balance 1:00 +91 Tap a country code to price the call 123456789*0# [Call](https://telvio.app/download/) About ## What is Telvio? Telvio is a mobile VoIP application available on iOS and Android that lets users make international phone calls to landlines and mobile phones in over 200 countries. Calls travel over WiFi or mobile data instead of your carrier's cellular network, which reduces costs by up to 98% compared to carrier roaming. No registration or account creation is required. Download the app and start calling immediately. Minutes are purchased as one-time packages starting at $1.99, never expire, and billing is calculated per second with no connection fees. Telvio uses Voice over Internet Protocol (VoIP) technology to connect callers to real phone numbers. The person receiving the call answers their regular phone — they do not need any app, special equipment, or internet connection. - Available on iOS and Android — free to download - No registration, email, or password required - Per-second billing with no connection fees - Minutes never expire — no subscription, no renewal - Calls real phone numbers: landlines, mobiles, office lines How it works ## Three steps toyour first call No registration, no verification, no waiting. Download and call in under 30 seconds. 01 ### Download the app Get Telvio from the App Store or Google Play. No registration, no email, no password. Open it and you’re ready. 02 ### Dial the number Enter any phone number worldwide — or pick from your contacts. See the rate per minute before you call. 03 ### Talk Your call connects over WiFi or mobile data. Crystal-clear VoIP quality. They answer their regular phone. Why Telvio ## Why travelers and expatschoose Telvio Roaming charges are absurd. Hotel phones cost a fortune. Telvio replaces all of that with one lightweight app. Pricing ### Rates from $0.03/min Call the United Kingdom for $0.03 a minute, Mexico for $0.05, the United States for $0.07. No hidden fees, no connection charges, no surprises. United Kingdom $0.03 Mexico $0.05 Peru $0.05 Canada $0.07 Malaysia $0.07 ### No roaming needed Works on any WiFi network or mobile data. Call from a hotel, airport, or coffee shop anywhere in the world. ### Minutes never expire Buy minutes once, use them whenever. No monthly subscription, no auto-renewal, no deadline pressure. ### No registration Download and call. No account, no email verification, no phone number sharing. Your privacy stays intact. ### Call real phone numbers Landlines, mobiles, office lines. The person you're calling doesn't need an app or internet connection. They just pick up their phone. 📱 📞 Who it's for ## Built for people who callacross borders Whether you travel once a year or live abroad full-time, Telvio works for you. [### Travelers Call home from any hotel WiFi. No roaming, no SIM swaps, no carrier surprises. Learn more](https://telvio.app/for-travelers/)[### Expats Stay connected with family back home. Weekly calls that cost dollars, not hundreds. Learn more](https://telvio.app/for-expats/)[### Students abroad Call parents without worrying about phone bills. Budget-friendly rates for every country. Learn more](https://telvio.app/for-students/)[### Business professionals Reach international clients and partners without a corporate phone plan. Learn more](https://telvio.app/for-business/)[### Immigrants Call your family back home on their regular phone. Affordable daily calls. Learn more](https://telvio.app/for-immigrants/) Compare ## How much does aninternational call cost? Carrier roaming charges can cost 50 to 100 times more than a VoIP call over WiFi. Here is a side-by-side for a 10-minute call. | Country | Telvio | Roaming | Calling card | You save | | --- | --- | --- | --- | --- | | 🇲🇽Mexico | $0.50 | $20.00 | $2.00 | 98% | | 🇨🇦Canada | $0.70 | $15.00 | $0.80 | 95% | | 🇺🇸United States | $0.70 | $15.00 | $0.80 | 95% | | 🇮🇳India | $2.40 | $25.00 | $2.00 | 90% | | 🇧🇷Brazil | $1.40 | $30.00 | $3.00 | 95% | | 🇦🇺Australia | $2.30 | $20.00 | $1.50 | 89% | Based on average US carrier international roaming rates. Actual rates vary. [View all country rates](https://telvio.app/rates/) Coverage ## 200+ countries covered Call landlines and mobile phones in virtually every country. Here are some of the most popular destinations. [🇺🇸 USA from $0.07/min](https://telvio.app/call/united-states/)[🇬🇧 UK from $0.03/min](https://telvio.app/call/united-kingdom/)[🇩🇪 Germany from $0.27/min](https://telvio.app/call/germany/)[🇫🇷 France from $0.35/min](https://telvio.app/call/france/)[🇮🇳 India from $0.24/min](https://telvio.app/call/india/)[🇨🇦 Canada from $0.07/min](https://telvio.app/call/canada/)[🇦🇺 Australia from $0.23/min](https://telvio.app/call/australia/)[🇧🇷 Brazil from $0.14/min](https://telvio.app/call/brazil/)[🇲🇽 Mexico from $0.05/min](https://telvio.app/call/mexico/)[🇯🇵 Japan from $0.19/min](https://telvio.app/call/japan/)[🇰🇷 South Korea from $0.17/min](https://telvio.app/call/south-korea/)[🇨🇳 China from $4.54/min](https://telvio.app/call/china/)[🇮🇹 Italy from $1.67/min](https://telvio.app/call/italy/)[🇪🇸 Spain from $0.21/min](https://telvio.app/call/spain/)[🇳🇱 Netherlands from $0.17/min](https://telvio.app/call/netherlands/)[🇵🇱 Poland from $0.69/min](https://telvio.app/call/poland/)[🇹🇷 Turkey from $0.10/min](https://telvio.app/call/turkey/)[🇵🇭 Philippines from $1.16/min](https://telvio.app/call/philippines/)[🇳🇬 Nigeria from $0.32/min](https://telvio.app/call/nigeria/)[🇿🇦 South Africa from $0.49/min](https://telvio.app/call/south-africa/)[🇸🇬 Singapore from $0.17/min](https://telvio.app/call/singapore/)[🇦🇪 UAE from $0.48/min](https://telvio.app/call/united-arab-emirates/)[🇸🇦 Saudi Arabia from $0.30/min](https://telvio.app/call/saudi-arabia/)[🇹🇭 Thailand from $0.57/min](https://telvio.app/call/thailand/)[🇻🇳 Vietnam from $0.65/min](https://telvio.app/call/vietnam/)[🇮🇩 Indonesia from $0.44/min](https://telvio.app/call/indonesia/)[🇵🇰 Pakistan from $0.15/min](https://telvio.app/call/pakistan/)[🇪🇬 Egypt from $0.28/min](https://telvio.app/call/egypt/)[🇰🇪 Kenya from $0.40/min](https://telvio.app/call/kenya/)[🇨🇴 Colombia from $0.11/min](https://telvio.app/call/colombia/)[🇦🇷 Argentina from $1.74/min](https://telvio.app/call/argentina/)[🇨🇱 Chile from $0.14/min](https://telvio.app/call/chile/)[🇵🇪 Peru from $0.05/min](https://telvio.app/call/peru/)[🇷🇴 Romania from $0.23/min](https://telvio.app/call/romania/)[🇺🇦 Ukraine from $0.28/min](https://telvio.app/call/ukraine/)[🇮🇱 Israel from $0.10/min](https://telvio.app/call/israel/)[🇲🇾 Malaysia from $0.07/min](https://telvio.app/call/malaysia/)[🇧🇩 Bangladesh from $0.15/min](https://telvio.app/call/bangladesh/)[🇬🇭 Ghana from $0.65/min](https://telvio.app/call/ghana/)[🇵🇹 Portugal from $0.93/min](https://telvio.app/call/portugal/) [View all countries](https://telvio.app/call/) 200+ Countries covered $0.03 Cheapest rate per minute 0 Registration required ∞ Minute expiration Trust ## Built on enterprise infrastructure Consumer pricing, carrier-grade technology. Here is what powers every call. ### Secure payments Payments processed by Apple App Store and Google Play. Your card details never touch our servers. ### Carrier-grade network Calls routed through Tier-1 telecommunications carriers with global coverage and carrier-grade uptime. ### Privacy by design No account registration means no user profiles, no email lists, and no personal data to sell. We know nothing about you. Comparison ## How Telvio compares Most calling apps require accounts, subscriptions, or only work app-to-app. Here is how Telvio stacks up. | Feature | Telvio | Skype | WhatsApp | Viber | Google Voice | | --- | --- | --- | --- | --- | --- | | Calls real phones | Yes | Yes | No | Yes | US/CA only | | Registration needed | None | Microsoft acct | Phone number | Phone number | Google acct | | Minutes expire | Never | 180 days | N/A | 180 days | N/A | | Min. price (US) | $0.03/min | $0.025/min | Free* | $0.019/min | Free (US) | | Subscription needed | No | Optional | No | Optional | No | | Works worldwide | Yes | Yes | App-to-app | Yes | US only | | Free trial minute | Yes (1 min) | No | N/A | No | N/A | *WhatsApp calls are free only between WhatsApp users. Cannot call landlines or non-WhatsApp mobile numbers. Pricing ## Simple, honest pricing Buy minutes when you need them. No subscriptions. No monthly fees. Pay once, call whenever. ### Starter For a quick call home $1.99 Up to 30 min to Canada From $0.03/min depending on country [Get Starter](https://telvio.app/download/) Most Popular ### Standard For regular calling $4.99 Up to 70 min to Canada From $0.03/min 2.5× credit [Get Standard](https://telvio.app/download/) ### Pro For heavy callers $9.99 Up to 140 min to Canada From $0.03/min 5× credit [Get Pro](https://telvio.app/download/) All prices in USD. Minutes never expire. Secure payment via Apple App Store or Google Play. ## See rates for your country Mexico from $0.05/min USA from $0.07/min India from $0.24/min Canada from $0.07/min [View all rates](https://telvio.app/rates/) ## Frequently asked questions How does Telvio work? Telvio routes your calls over WiFi or mobile data instead of your carrier’s cellular network. You dial a real phone number, and the person on the other end answers their regular phone. They don’t need the app. Do I need to create an account? No. Download, open, dial. There is no registration, no email, no password. You can start calling within seconds of installing the app. What does the free minute include? Every new install gets one free minute to any country. It works exactly like a paid minute — full quality, any destination. Use it to test the call quality before you buy. Do purchased minutes expire? No. Your minutes never expire. Buy them now, use them whenever you need them. No monthly fees, no subscriptions, no surprises. Can I call landlines and mobile phones? Yes. Telvio calls real phone numbers — landlines, mobile phones, office lines. The person you’re calling doesn’t need an app or even an internet connection. How much does it cost to call different countries? Rates vary by country, and the spread is wide. Mexico and Canada cost $0.05 per minute, the United States $0.07, India $0.24. Other destinations cost considerably more — Western European mobiles run several times higher. The app shows the exact rate for a number before the call connects, and the rates page lists every destination. Is Telvio safe to use? Yes. Telvio processes payments through the Apple App Store and Google Play Store, so your payment information is never shared with us. Calls are routed through established VoIP carriers — Zadarma for most destinations, with Telnyx on some routes. We do not collect personal data beyond what is technically necessary to connect your call, and calls are never recorded. What is VoIP? VoIP stands for Voice over Internet Protocol. It is the technology that allows phone calls to be made over the internet instead of through traditional telephone lines. When you use Telvio, your voice is converted into data packets and transmitted over WiFi or mobile data to reach the person you are calling. The result is the same as a regular phone call, but at a fraction of the cost. Does the other person need Telvio installed? No. Telvio calls real phone numbers — landlines, mobile phones, and office lines. The person you are calling answers their regular phone. They do not need any app, internet connection, or special equipment. What internet speed do I need? Telvio works well on most connections. A stable connection with at least 100 kbps upload and download speed is sufficient for clear calls. This includes most WiFi networks, 4G, and 5G connections. Hotel WiFi, airport WiFi, and coffee shop networks typically work fine. Which countries can I call with Telvio? Telvio covers over 200 countries and territories. You can call landlines and mobile phones in the United States, United Kingdom, Germany, France, India, Canada, Australia, Brazil, Mexico, Japan, and many more. Check the full rates page for a complete list of destinations and per-minute pricing. How is Telvio different from WhatsApp or Skype calls? WhatsApp and similar apps only allow free calls between users of the same app — both sides need the app installed. Telvio calls real phone numbers, so the person you call just picks up their regular phone. Unlike Skype, Telvio requires no account registration and your purchased minutes never expire. Testimonials ## What our users say “ I call my parents in Munich every week. With my old carrier it was costing me $40 a month in roaming. Telvio cut that to about $2. The quality is the same as a normal phone call, sometimes better. MK Maria K. Expat in Germany “ I travel for work 3 weeks out of 4. Hotels charge $5 a minute for international calls. I just connect to the WiFi, open Telvio, and call my clients for almost nothing. No account setup, which matters when you're in a rush. JR James R. Frequent traveler “ Calling my family in Osaka from the US used to mean buying calling cards that expired before I used them. With Telvio the minutes stay forever and the rates to Japan are really low. YT Yuki T. Student abroad Resources ## Learn more about international calling Guides, comparisons, and expert picks to help you choose the right calling solution. [### VoIP Guide Step-by-step guides on WiFi calling, VoIP setup, and international dialing. Browse articles](https://telvio.app/guide/)[### App Comparisons Side-by-side comparisons of Telvio vs Skype, Viber, WhatsApp, and more. Browse articles](https://telvio.app/compare/)[### Top Picks Curated lists of the best calling apps for every use case. Browse articles](https://telvio.app/best/)[### Features Deep dives into WiFi calling, per-second billing, and privacy. Browse articles](https://telvio.app/features/) ## Your next call costs less than you think Download Telvio free. One minute included, no registration needed. [Download Telvio](https://telvio.app/download/) --- HTML version: https://telvio.app/ Structured data for this site: https://telvio.app/api/v1/openapi.json · https://telvio.app/llms.txt Free to quote and reuse with a link back to the source URL above (CC BY 4.0). --- **Pricing — Minute Packages** > Telvio minute packages: $1.99 starter, $4.99 standard, or $9.99 pro. No subscription, no expiration. Credit-based billing from $0.03/min. Source: https://telvio.app/pricing/ # Buy minutes, not subscriptions Choose a package, call whenever you want. Minutes never expire and there are no recurring charges. One purchase, permanent balance. ## Starter For a quick check-in call $1.99 Up to 30 min to Canada From $0.03/min depending on country ~30 min to Canada or Mexico ~8 min to India [Get Starter](https://telvio.app/download/) Most Popular ## Standard For regular international calling $4.99 Up to 70 min to Canada From $0.03/min depending on country ~70 min to Canada or Mexico ~20 min to India 2.5× the credit of Starter [Get Standard](https://telvio.app/download/) ## Pro For heavy callers and families $9.99 Up to 140 min to Canada From $0.03/min depending on country ~140 min to Canada or Mexico ~41 min to India 5× the credit of Starter [Get Pro](https://telvio.app/download/) Minutes never expire No subscription Secure payment via Apple/Google No hidden fees ## Pricing questions Do minutes expire? No. Purchased minutes never expire. Buy them today, use them in six months. There is no deadline and no auto-renewal. Are there any hidden fees or connection charges? No. The per-minute rate is the only cost. There are no connection fees, no monthly charges, and no surprise surcharges. What you see on the rates page is what you pay. How is payment processed? Payment goes through the Apple App Store (iPhone) or Google Play Store (Android). Telvio never sees your credit card details. The stores handle all payment security. Can I buy more minutes before using all of mine? Yes. New minutes are added to your existing balance. If you have 10 minutes left and buy the Standard package, you’ll have 130 minutes total. What if the call quality is poor? Call quality depends on your internet connection. On a stable WiFi or 4G/5G connection, quality is comparable to a regular phone call. Your free minute lets you test before buying. Can I get a refund? Refunds are handled by Apple or Google according to their refund policies. Contact the respective app store support for refund requests. ## Ready to call? Download Telvio free. Test with your included free minute, then buy a package when you’re ready. [Download Telvio](https://telvio.app/download/) ## How the pricing works You buy credit in one of three packs and spend it at the per-country rate. There is no subscription, no monthly minimum, no connection fee and no expiry date. That is the entire model, and it is deliberately simpler than most of this market. Packs are **credit, not minute bundles**. A larger pack is more money on the account at the same per-country rate — there is no volume tier and no rate that improves with spend. Several competitors sell bundles that look similar and behave differently, so it is worth stating plainly rather than implying a discount that does not exist. How far a pack goes therefore depends entirely on where you call. The same amount buys hundreds of minutes to the United Kingdom and a handful to China, because the wholesale cost of reaching those two networks differs by more than a hundred times. Every [destination page](https://telvio.app/call/) shows the figure for that country. ## What you are not charged for - **No connection fee.** A flat per-call charge is still standard on calling cards and present on some apps at around five cents. On a one-minute call it can double the cost. There is none here. - **No rounding.** Billing is per second. A forty-seven second call costs forty-seven seconds, not a minute. - **No expiry.** Credit does not lapse and there is no dormancy fee. A pack bought for one call keeps its value indefinitely. - **No subscription.** Nothing recurs, so there is nothing to cancel and nothing to forget you are paying for. - **No account fee, and no account.** There is no sign-up, so there is no identity to maintain or delete. ## Where the price of a minute comes from Very little of it is our decision. The dominant component is the wholesale **termination rate**: what the operator at the far end charges to accept the call and deliver it to the person you are ringing. We pay that, add a margin, and quote the total. Those rates are set by local regulation and competition, and by which routes our carrier holds. They vary by more than two orders of magnitude. At the cheap end a minute retails for single-digit cents — the United Kingdom is $0.03. Where termination remains a protected revenue stream, the same minute costs several dollars. Distance plays essentially no part. This is why we do not describe every corridor as cheap. We publish live prices for 41 destinations and only the first handful of them are cheap in the sense the word usually implies; China, Switzerland and the Nordics are expensive with us as with everybody else, and a page here that called them pennies a minute would be quoting a rate we do not honour. The [rate sheet](https://telvio.app/rates/) is the whole list, sorted by price, with nothing hidden at the bottom. ## Payment, refunds and the free minute | How you pay | Through the App Store. Card details never reach us, and there is no payment form in the app. | | --- | --- | | The free minute | Every new install includes one free minute. It exists so you can hear the call quality on your own corridor before spending anything — quality is per-destination and no review generalises usefully across 200 countries. | | Refunds | Handled by Apple under their policy, because the purchase is theirs. Their *Report a Problem* page is the route. We can help establish what happened on a call first, which is usually what the request needs. | | Topping up | Any time. New credit adds to the existing balance; nothing is reset and nothing is forfeited. | | Currency | Rates are quoted in US dollars. The App Store charges in your local currency at its own conversion, which is why the amount on your statement may differ slightly from the pack price. | ## Working out what you will actually spend Two questions settle it, and neither is the headline rate. How long is a typical call, and is the number you call a landline or a mobile? If your calls are short — a check-in, a confirmation, a two-minute update — the billing increment dominates. Per-second charging is worth more to you than a lower per-minute rate that rounds up, because a forty-seven second call at a rounded minute costs twenty-eight per cent more than the time you used. If your calls run half an hour, the increment is noise and the rate is everything. If you have a choice of number, check both columns on the destination page. In most countries a mobile costs more to reach than a landline, sometimes several times more, and that single choice usually beats any saving available from switching provider. The [cost calculator](https://telvio.app/tools/call-cost-calculator/) does both calculations for a specific country and duration, and shows what the same call would cost from a provider that rounds to the minute, so the comparison is arithmetic rather than assertion. The [full rate table](https://telvio.app/rates/) has every country we publish. ## Bottom line Three credit packs, spent at the per-country rate, with per-second billing, no connection fee, no subscription and no expiry. A bigger pack is more credit at the same rate rather than a cheaper minute. What a pack buys depends entirely on the destination, because the price of a minute is mostly the wholesale rate the operator at the far end charges. Around twenty corridors are genuinely cheap; the rest are what they are, and we say so. One comparison worth doing before you buy anything: work out what you currently spend. Most people calling abroad regularly are either on carrier roaming at one to three dollars a minute, on an international add-on they use twice a year, or on a calling card with a connection fee. All three are usually more expensive than credit spent at a published per-second rate, and the arithmetic takes two minutes with the calculator. The free minute exists so that arithmetic can be checked rather than trusted. Call the number you actually call, hear the quality on your own corridor, and decide afterwards. Nothing recurs and there is nothing to cancel if you decide against it. ## Frequently asked questions How much does Telvio cost? The app is free and there is no subscription. You buy credit in one of three packs and spend it at the per-country rate, with per-second billing and no connection fee. Every new install includes one free minute. Do Telvio minutes expire? No. Credit has no expiry date, no dormancy fee and no monthly minimum. Several large calling services expire unused balance after 180 days; money you paid and cannot spend is the highest per-minute rate there is. Is a bigger pack cheaper per minute? No. A larger pack is more credit at the same per-country rate — there is no volume tier and no rate that improves with spend. Some competitors sell bundles that look similar and behave differently, so it is worth checking whether you are buying credit or minutes. Are there any hidden fees? None. No connection fee, no monthly minimum, no maintenance charge on a dormant balance and no rounding up to whole minutes. The per-minute rate for the destination is the entire cost. How is payment handled? Through the App Store, so card details never reach us and there is no payment form in the app. Refunds are handled by Apple under their policy, via their Report a Problem page. How many minutes will a pack give me? It depends entirely on the destination, because a pack is credit rather than a minute bundle. The same amount buys hundreds of minutes to the United Kingdom and a handful to China, since the wholesale cost of reaching those two networks differs by more than a hundred times. Each destination page shows the figure for that country. --- HTML version: https://telvio.app/pricing/ Structured data for this site: https://telvio.app/api/v1/openapi.json · https://telvio.app/llms.txt Free to quote and reuse with a link back to the source URL above (CC BY 4.0). --- **Calling Rates by Country** > Telvio per-minute calling rates for 93 countries. Call the US for $0.07/min, India for $0.24/min, Mexico for $0.05/min. Per-second billing, no connection fee. Source: https://telvio.app/rates/ # Calling rates Per-minute rates for calls from Telvio to landlines and mobile phones worldwide. All rates in USD. No connection fees, no hidden charges. Billed per second A 61-second call costs 61 seconds, not two minutes. The rate below divided by 60, for every second on the line. No connection fee Nothing is charged the moment a call connects. The per-minute rate is the whole price. Credit never expires Packs are USD credit, spent at the rate of whatever country you dial. Unused credit stays yours. Rates for all 93 destinations, A to Z. Mobile and landline are priced separately because they cost us differently to reach — in many countries a landline is a fraction of the mobile price. | Country | Landline | Mobile | | --- | --- | --- | | 🇩🇿 Algeria +213 | $0.20/min | $1.75/min | | 🇦🇷 Argentina +54 | $1.74/min | $1.74/min | | 🇦🇺 Australia +61 | $0.23/min | $0.23/min | | 🇦🇹 Austria +43 | $0.24/min | $0.24/min | | 🇦🇿 Azerbaijan +994 | $0.56/min | $0.80/min | | 🇧🇭 Bahrain +973 | $0.30/min | $0.30/min | | 🇧🇩 Bangladesh +880 | $0.15/min | $0.15/min | | 🇧🇾 Belarus +375 | $0.98/min | $0.98/min | | 🇧🇪 Belgium +32 | $0.52/min | $0.52/min | | 🇧🇷 Brazil +55 | $0.14/min | $0.14/min | | 🇧🇬 Bulgaria +359 | $0.23/min | $0.95/min | | 🇰🇭 Cambodia +855 | $0.28/min | $0.28/min | | 🇨🇲 Cameroon +237 | $0.43/min | $0.95/min | | 🇨🇦 Canada +1 | $0.07/min | $0.07/min | | 🇨🇱 Chile +56 | $0.14/min | $0.14/min | | 🇨🇳 China +86 | $4.54/min | $4.54/min | | 🇨🇴 Colombia +57 | $0.11/min | $0.11/min | | 🇨🇷 Costa Rica +506 | $0.05/min | $0.15/min | | 🇭🇷 Croatia +385 | $0.43/min | $1.13/min | | 🇨🇿 Czech Republic +420 | $0.83/min | $0.83/min | | 🇩🇰 Denmark +45 | $3.01/min | $3.01/min | | 🇩🇴 Dominican Republic +1809 | $0.30/min | $0.30/min | | 🇪🇨 Ecuador +593 | $0.30/min | $0.63/min | | 🇪🇬 Egypt +20 | $0.28/min | $0.33/min | | 🇪🇹 Ethiopia +251 | $0.80/min | $0.80/min | | 🇫🇮 Finland +358 | $2.85/min | $2.85/min | | 🇫🇷 France +33 | $0.35/min | $0.35/min | | 🇬🇪 Georgia +995 | $0.39/min | $0.68/min | | 🇩🇪 Germany +49 | $0.27/min | $0.27/min | | 🇬🇭 Ghana +233 | $0.65/min | $0.65/min | | 🇬🇷 Greece +30 | $3.47/min | $3.47/min | | 🇬🇹 Guatemala +502 | $0.43/min | $0.43/min | | 🇭🇹 Haiti +509 | $0.88/min | $0.88/min | | 🇭🇳 Honduras +504 | $0.43/min | $0.43/min | | 🇭🇰 Hong Kong +852 | $0.08/min | $0.10/min | | 🇭🇺 Hungary +36 | $0.14/min | $0.13/min | | 🇮🇳 India +91 | $0.24/min | $0.24/min | | 🇮🇩 Indonesia +62 | $0.44/min | $0.44/min | | 🇮🇶 Iraq +964 | $0.43/min | $0.63/min | | 🇮🇪 Ireland +353 | $0.28/min | $0.28/min | | 🇮🇱 Israel +972 | $0.10/min | $0.30/min | | 🇮🇹 Italy +39 | $1.67/min | $1.67/min | | 🇯🇲 Jamaica +1876 | $0.68/min | $0.68/min | | 🇯🇵 Japan +81 | $0.19/min | $0.19/min | | 🇯🇴 Jordan +962 | $0.40/min | $0.48/min | | 🇰🇿 Kazakhstan +7 | $1.57/min | $1.57/min | | 🇰🇪 Kenya +254 | $0.58/min | $0.40/min | | 🇰🇼 Kuwait +965 | $0.19/min | $0.24/min | | 🇰🇬 Kyrgyzstan +996 | $0.30/min | $0.70/min | | 🇱🇧 Lebanon +961 | $0.28/min | $0.53/min | | 🇲🇾 Malaysia +60 | $0.07/min | $0.07/min | | 🇲🇽 Mexico +52 | $0.05/min | $0.05/min | | 🇲🇩 Moldova +373 | $0.95/min | $0.70/min | | 🇲🇦 Morocco +212 | $0.48/min | $1.88/min | | 🇲🇲 Myanmar +95 | $0.53/min | $0.53/min | | 🇳🇵 Nepal +977 | $1.61/min | $1.61/min | | 🇳🇱 Netherlands +31 | $0.17/min | $0.17/min | | 🇳🇿 New Zealand +64 | $0.45/min | $0.45/min | | 🇳🇬 Nigeria +234 | $0.32/min | $0.32/min | | 🇳🇴 Norway +47 | $0.26/min | $0.26/min | | 🇴🇲 Oman +968 | $0.35/min | $0.45/min | | 🇵🇰 Pakistan +92 | $0.15/min | $0.15/min | | 🇵🇪 Peru +51 | $0.05/min | $0.05/min | | 🇵🇭 Philippines +63 | $1.16/min | $1.16/min | | 🇵🇱 Poland +48 | $0.69/min | $0.69/min | | 🇵🇹 Portugal +351 | $0.93/min | $0.93/min | | 🇶🇦 Qatar +974 | $0.40/min | $0.56/min | | 🇷🇴 Romania +40 | $0.23/min | $0.30/min | | 🇷🇺 Russia +7 | $1.57/min | $1.57/min | | 🇸🇦 Saudi Arabia +966 | $0.30/min | $0.38/min | | 🇸🇳 Senegal +221 | $0.56/min | $0.98/min | | 🇸🇬 Singapore +65 | $0.17/min | $0.17/min | | 🇿🇦 South Africa +27 | $0.49/min | $0.49/min | | 🇰🇷 South Korea +82 | $0.17/min | $0.17/min | | 🇪🇸 Spain +34 | $0.21/min | $0.21/min | | 🇱🇰 Sri Lanka +94 | $0.38/min | $0.37/min | | 🇸🇪 Sweden +46 | $0.41/min | $0.41/min | | 🇨🇭 Switzerland +41 | $3.67/min | $3.67/min | | 🇹🇼 Taiwan +886 | $0.05/min | $0.38/min | | 🇹🇯 Tajikistan +992 | $0.35/min | $0.50/min | | 🇹🇿 Tanzania +255 | $0.95/min | $0.95/min | | 🇹🇭 Thailand +66 | $0.57/min | $0.57/min | | 🇹🇹 Trinidad and Tobago +1868 | $0.20/min | $0.20/min | | 🇹🇳 Tunisia +216 | $2.48/min | $2.48/min | | 🇹🇷 Turkey +90 | $0.10/min | $0.50/min | | 🇺🇬 Uganda +256 | $0.95/min | $0.95/min | | 🇺🇦 Ukraine +380 | $0.28/min | $0.56/min | | 🇦🇪 United Arab Emirates +971 | $0.48/min | $0.48/min | | 🇬🇧 United Kingdom +44 | $0.03/min | $0.03/min | | 🇺🇸 United States +1 | $0.07/min | $0.07/min | | 🇺🇿 Uzbekistan +998 | $0.32/min | $0.32/min | | 🇻🇪 Venezuela +58 | $0.09/min | $0.18/min | | 🇻🇳 Vietnam +84 | $0.65/min | $0.65/min | Rates are subject to change. The app always shows the live rate for a destination before the call connects, so you never find out the price afterwards. ## See your exact rate in the app Download Telvio to check the live rate for any country before you call. [Download Telvio](https://telvio.app/download/) ## How to read this table Two columns per country, because in most of the world a landline and a mobile cost different amounts to reach and the difference is often large. Where you have a choice of number to call, that column is the cheapest decision available to you. Every figure is US dollars per minute, and it is the whole price. There is no connection fee to add, no monthly minimum, no maintenance charge on a dormant balance and no rounding: billing is per second, so a call that ends at four minutes twelve seconds is charged as four minutes twelve seconds. The rates are read from a single file at build time and rendered into the page. Nobody types a price into a template, which is why the table, the country pages, the calculator and the app cannot disagree with each other. | Landline | A fixed line. Usually the cheaper of the two, and in some countries dramatically so. | | --- | --- | | Mobile | A mobile number. Cheaper than the landline in a minority of countries — the United Kingdom, Germany and Kenya among them — where regulation pushed mobile termination below fixed. | | "From" | Where a single figure is shown, it is the lower of the two, not an average and not the landline by convention. | | Missing country | A country with no row is one we do not currently publish a rate for. It is not a claim that the call cannot be placed, only that we are not quoting a price. | ## Why the same call costs fifty times more to one country than another The price of an international call is mostly not a decision made by the company selling it. It is the wholesale **termination rate**: what the operator at the far end charges to accept the call onto their network and deliver it to the person you are ringing. Your provider pays that, adds a margin, and quotes the total. Termination rates are set by a mixture of regulation and negotiation, and they vary enormously. Where a regulator has driven termination towards cost, and where our carrier has a direct route, the retail price lands in single-digit cents — today that is the United Kingdom, Mexico and Peru end of the sheet. Where termination is still a protected revenue stream for an incumbent, or where a handful of operators face little competition, the same minute can cost a hundred times more. The spread across the destinations we sell is currently about a factor of 150. This is why the map of expensive destinations looks strange to anyone expecting it to track distance or wealth. The United Kingdom is the cheapest destination on our sheet at $0.03 a minute, while Switzerland and Denmark — nearer to most European callers and no poorer — cost more than a hundred times that. Distance is essentially irrelevant to the cost of routing a call over the internet; the terminating operator's tariff, and whether our carrier holds a direct route to it, is essentially all of it. It also means a service that is cheapest to one country tells you nothing about another. Compare on the corridor you actually call. ## What moves a rate, and what does not - **Wholesale rates change,** and retail follows. A rate on this page is what it is today, not a promise about next quarter. When one changes it changes everywhere on the site at once, because there is only one source. - **Time of day does not.** Peak and off-peak pricing belonged to circuit-switched telephony, where capacity was physically constrained at busy hours. A VoIP rate is the same at three in the morning as at three in the afternoon. - **Call volume does not.** A larger credit pack is more credit at the same per-country rate. There is no volume tier and no discount for buying more, and we would rather say so than manufacture a saving that is not there. - **Where you are calling from does not.** The rate is a property of the destination. Calling India costs the same from Toronto as from Dubai. - **Special and premium numbers are excluded.** Short codes, premium-rate services and satellite ranges are priced separately by the terminating network and are not covered by a country's published rate anywhere in the industry. ## Comparing this table with a carrier bill The comparison people usually want is against roaming, and the gap is not marginal. Carrier roaming for voice commonly runs between one and three dollars a minute; a VoIP call to the same destination is usually a few cents. That is a factor of fifty to a hundred, and it dwarfs every difference between VoIP providers. The second comparison is against an international add-on from your own carrier. Those are usually priced as a monthly bundle, which is good value if you call the same country every week and poor value if you call twice a year — the arithmetic turns on whether you use the bundle, not on its headline rate. The third is against a calling card, which is where connection fees and rounding do the most damage. A card advertising one cent a minute with a 49-cent connection fee costs 50 cents for a one-minute call. The [calculator](https://telvio.app/tools/call-cost-calculator/) shows the same effect for per-minute rounding on any duration you like. ## Currency, statements and what you will actually be charged Rates on this site are quoted in US dollars per minute, because that is the currency wholesale voice is traded in and quoting anything else would mean baking in a conversion that moves daily. What appears on your statement is different, and it is worth expecting: the App Store charges in your local currency at its own conversion rate, and it applies local tax where your jurisdiction requires it. A $4.99 pack therefore shows up as a local-currency amount that is not exactly 4.99 converted, and the difference is Apple's conversion and your local VAT rather than a surcharge from us. Call credit itself is denominated in dollars and spent at the dollar rates on this page, so the arithmetic between a rate and a balance is exact regardless of what you paid in. There is no second conversion when you make a call, and no currency spread applied per minute. One consequence worth knowing: because the rate is a property of the destination and not of your location, moving country does not change what you pay per minute. Only the App Store side of the transaction is local. ## Bottom line Rates are per minute in US dollars, quoted separately for landline and mobile because the two genuinely cost different amounts to reach. There is no connection fee, no rounding and no expiry, so the number in the table is the number you pay. The reason one country costs fifty times another is the terminating operator's wholesale rate, not distance. Compare any provider on the corridor you actually call rather than on an advertised headline for a country you never dial. ## Frequently asked questions How much does it cost to call abroad with Telvio? It depends entirely on the destination: rates range from about two cents a minute to over a dollar, because the price is set mostly by what the operator at the far end charges to accept the call. Landline and mobile are quoted separately, and billing is per second with no connection fee. Why is calling one country so much more expensive than another? Because of the wholesale termination rate the destination operator charges, and the route our carrier holds to it. Where both work in your favour a minute retails for single-digit cents — the United Kingdom is $0.03 today. Where termination is still a protected revenue stream, the same minute can cost a hundred times more. Distance plays almost no part. Is it cheaper to call a landline or a mobile? In most countries the landline, often substantially, because mobile operators charge more to accept an incoming call. In a minority — the United Kingdom, Germany and Kenya among them — regulation pushed mobile termination below fixed and the relationship reverses. Both columns are published for every country for exactly this reason. Are calls cheaper at night? No. Peak and off-peak pricing belonged to circuit-switched telephony, where capacity was physically constrained at busy hours. A VoIP rate is the same at three in the morning as at three in the afternoon. Time of day affects who answers, not what it costs. Do bigger credit packs give a cheaper per-minute rate? No. A larger pack is more credit at the same per-country rate — there is no volume tier and no discount for buying more. Some competitors sell bundled minutes that work differently, so it is worth checking whether a bundle is credit or minutes before comparing headline prices. Do these rates include any hidden charges? No. The per-minute rate is the whole price: no connection fee, no monthly minimum, no maintenance charge on a dormant balance and no rounding. Premium and special number ranges are excluded, as they are by every provider, because the terminating network prices those separately. --- HTML version: https://telvio.app/rates/ Structured data for this site: https://telvio.app/api/v1/openapi.json · https://telvio.app/llms.txt Free to quote and reuse with a link back to the source URL above (CC BY 4.0). --- **Telvio Features — Per-Second WiFi Calling** > Explore Telvio features: WiFi calling to real phones, zero registration, per-second billing, and minutes that never expire. See what makes Telvio different. Source: https://telvio.app/features/ How it works # Features that make calling simple Telvio strips away everything that makes international calling complicated. No accounts, no contracts, no tricks. Just cheap calls that work from anywhere. [Core feature ## WiFi Calling Call real landlines and mobile phones from any WiFi hotspot or mobile data connection. No roaming charges, no carrier involvement. Works from hotels, airports, and cafes worldwide. Learn more](https://telvio.app/features/wifi-calling/)[Privacy ## No Registration Download and call in under 30 seconds. No email, no phone number, no password. Your identity stays private because we never ask for it in the first place. Learn more](https://telvio.app/features/no-registration/)[Fair billing ## Per-Second Billing A 61-second call costs 61 seconds, not 2 minutes. No connection fees on top of that. You pay for exactly the time you talk — nothing more. Learn more](https://telvio.app/features/per-second-billing/)[No expiry ## Minutes Never Expire Buy a package before a trip. Use the leftover minutes six months later. Your balance stays on your account permanently — no deadlines, no auto-renewal, no forfeit. Learn more](https://telvio.app/features/no-expiration/) Simple by design ## How Telvio works 01 ### Download Get Telvio free from the App Store or Google Play. No sign-up screen, no terms you have to accept with a real email. The app is 30 MB. 02 ### Dial Open the keypad. Enter any number with country code, or pick from your contacts. The per-minute rate shows before you connect. 03 ### Talk Your call routes over WiFi or mobile data. The other person's regular phone rings. They pick up. No app required on their end. Side by side ## Telvio vs the rest Feature Telvio Others Registration required None Email, phone number, or social login Minute expiration Never 30–180 days (Skype, Viber, calling cards) Billing increment Per second 60-second blocks (most carriers) Connection fee per call $0.00 $0.05–$0.20 on many services Works without a data plan Yes — any WiFi works Requires cellular subscription ## Try it before you buy Every install includes one free minute. Call any country, test the quality, then decide. [Download Telvio](https://telvio.app/download/) ## What the app actually does Telvio places calls from your phone or tablet to ordinary landline and mobile numbers, over WiFi or mobile data, in more than 200 countries. The person you call needs nothing — no app, no internet, no smartphone. The call arrives as a normal phone call on whatever phone they have. That sentence is the whole product, and it is worth being precise about because it is the property that separates this category from free messaging apps. WhatsApp, Signal, Telegram and FaceTime carry voice between people who installed the same application. They are excellent and they cannot reach a landline in a village. What Telvio adds on top of reaching the network is a billing model designed to not surprise you: per-second charging with no connection fee, credit that never expires, and no account of any kind. ## Why per-second billing is the feature, not the rate Almost every calling service quotes a per-minute rate and bills in whole minutes. A forty-seven second call — "the flight landed", "are you home" — is charged as sixty seconds, which is twenty-eight per cent more than the time you spent talking. Across a month of short calls that difference is larger than the gap between most providers' headline rates. Telvio charges for the seconds you use. A call that ends at four minutes twelve seconds costs four minutes twelve seconds. There is no connection fee on top, and no minimum duration. The [cost calculator](https://telvio.app/tools/call-cost-calculator/) shows both figures side by side for any country and any duration, so the effect is arithmetic you can check rather than a claim you have to take. ## No account, and what that means in practice - **No email, no password, no phone number verification.** Install the app and dial. There is no sign-up flow because there is nothing to sign up to. - **Nothing to be leaked.** A service that holds no account credentials cannot lose them. This is a design decision with a privacy consequence rather than a privacy feature bolted on. - **Payment goes through the App Store**, so card details never reach us at all. - **The trade-off is real and worth stating:** with no account, credit lives on the device. Moving to a new phone does not carry a balance across, and there is no login to recover one from. That is the cost of the design, and it is why we say it here rather than in a support article. ## Credit that does not expire Several large calling services expire unused credit after 180 days, and some deduct a monthly maintenance charge from a dormant balance. Money you paid and cannot spend is the highest per-minute rate there is, and it is the part of a pricing page people read least carefully. Telvio credit has no expiry date, no dormancy fee and no monthly minimum. A pack bought for one call in March is still worth the same in November. Packs are credit rather than minute bundles, which is worth stating precisely because several competitors sell something that looks similar and is not. A larger pack is more credit at the same per-country rate — there is no volume tier and no rate that improves with spend. We would rather say that than manufacture a discount that is not there. ## What it needs, and what it will not do | Connection | Any internet connection. A voice call uses roughly 30–40 kbit/s each way, which is well within what a weak mobile signal carries. What it tolerates badly is a connection that loses packets in bursts — a congested hotel or airport network — which sounds like broken-up speech rather than a dropped call. | | --- | --- | | Platform | iOS and iPadOS 15.6 and later on iPhone and iPad, macOS 11.5 and later on Mac, Android 7.0 and later on Android phones and tablets. | | Emergency calls | Telvio cannot reach emergency services and must not be relied on for them. This is true of every internet calling application and is a limitation of the technology, not of this one. | | Receiving calls | Telvio places calls; it does not issue you an incoming number. If you need a number people can call you on, a virtual number service is the product for that — our [guides](https://telvio.app/guide/) cover what those do and do not deliver. | | Recording | Calls are not recorded, so there is nothing to retrieve, subpoena or leak. | ## Call quality: what you control and what you do not Voice needs very little bandwidth — roughly 30 to 40 kilobits per second each way — but it is intolerant of jitter and packet loss. That is why a call can break up on a connection that streams video fine: throughput is ample and the timing is not. What you control is the last few metres. A wired connection beats WiFi; being near the access point beats being three rooms away; a wired headset beats Bluetooth, which drops into a low-bandwidth profile the moment a microphone opens. Those three account for most of the quality difference people notice, and none of them involves a setting inside any app. What you do not control is the far end. A call to a mobile on a modern network can carry wideband audio; a call to a landline on legacy equipment is limited to the narrow band the telephone network has carried since the 1960s, roughly 300 Hz to 3.4 kHz. The same app sounds noticeably different on those two calls and there is nothing either party can do about it. This is also why no review can score call quality usefully across countries, and why every new install includes a free minute: one call on your own corridor tells you more than any amount of reading. ## Bottom line Telvio dials ordinary phone numbers in 200+ countries over any internet connection, with per-second billing, no connection fee, no account and credit that does not expire. The person you call needs nothing installed. It is iOS only for now, it cannot reach emergency services, it does not give you an incoming number, and with no account the balance lives on the device. Those four are the real limits and they are on this page rather than in the small print. Everything above is what the app does today. Where a feature is planned rather than shipped, this site says nothing about it at all, because a roadmap on a feature page is indistinguishable from a feature to anyone reading quickly. When the Android release exists, this page will describe it in the past tense like everything else on it. ## Frequently asked questions What is Telvio? An app that places calls from an iPhone or iPad to ordinary landline and mobile numbers in more than 200 countries, over WiFi or mobile data. The person you call needs nothing installed — the call arrives as a normal telephone call on any phone. Does Telvio require an account? No. There is no email, no password and no phone number verification. You install the app and dial. The trade-off is that with no account the credit balance lives on the device, so it does not follow you to a new phone. How does per-second billing work? You are charged for the seconds you actually talk. A call that ends at four minutes twelve seconds costs four minutes twelve seconds. Providers that bill per whole minute charge a full minute for a forty-seven second call, which is twenty-eight per cent more for the same conversation. Does Telvio credit expire? No. There is no expiry date, no dormancy fee and no monthly minimum. A pack bought for one call keeps its value until you make the next one, which is not true of several large competitors whose credit lapses after 180 days. Can Telvio call emergency numbers? No, and it must not be relied on for them. This is true of every internet calling application and is a limitation of the technology rather than of this app. Use your mobile network for emergencies. Can people call me back on Telvio? No. Telvio places calls; it does not issue you an incoming phone number. If you need a number people can ring, that is a virtual number service — a different product, covered in the guides. --- HTML version: https://telvio.app/features/ Structured data for this site: https://telvio.app/api/v1/openapi.json · https://telvio.app/llms.txt Free to quote and reuse with a link back to the source URL above (CC BY 4.0). --- **Why Telvio — What We Do Differently, and What We Do Not Do** > Per-second billing, no connection fee, credit that never expires, and no account at all. The four decisions behind Telvio, and an honest list of what it cannot do. Source: https://telvio.app/why-telvio/ · updated: 2026-09-04 1. [Home](https://telvio.app/) 2. Why Telvio Why Telvio # Four decisions, and the things they cost you Every calling app claims to be cheap. This page is about the four design decisions that decide whether that is true for the way *you* call — and about the five things Telvio deliberately cannot do. - From $0.03 a minute - 41 destinations - No account, ever In one paragraph Telvio places outgoing calls to ordinary landline and mobile numbers over WiFi or mobile data. It bills **per second** with **no connection fee**, the credit you buy **never expires**, and it works **without an account** — no name, no email address, no phone number, nothing to sign up for. Rates start at $0.03 a minute across 41 destinations, published in full and derived from the carrier's own price sheet rather than typed by hand. It cannot receive calls or text messages, cannot give you a phone number, and cannot reach emergency services. Those are not gaps waiting to be filled; they follow from what the product is, and they are listed in full further down. The part nobody compares ## The headline rate is not what decides the bill. Rounding and a per-call fee decide it. Calls a week 12 Typical call length 95s - Per second, no fee $2.47 How Telvio bills. You pay for the seconds you talked. - Rounded to the minute $3.12 Same rate. Every call rounded up to a whole minute. - Rounded, plus a call fee $5.66 Same rate, rounded, plus $0.049 for connecting each call. At **52** calls a month of **95** seconds each, the two models on the right cost **$3.20** more than the one on the left — at exactly the same per-minute rate. *A month of calling at $0.03 a minute under three billing models. The per-call fee of $0.049 is Skype's published connection charge to US, UK, India and Mexico landlines, recorded in March 2026. Free to reuse with a link to this page.* ## 1. Per second, from the moment somebody answers Most of this industry bills per minute and rounds up. Under that model a 35-second call is billed as sixty seconds and a five-second wrong number is billed as a full minute. The per-minute rate you compare between services is identical in both models; what you actually pay is not. How much that matters depends entirely on how you call. On a forty-minute call, one rounding is noise. On the calls most people actually make to family — a minute and a half, several times a week — rounding is a surcharge of twenty to forty per cent that never appears in any comparison, because the number everybody compares is the one that has not changed. Ringing is free, and billing starts when the call is answered. That is worth saying explicitly because it is the other half of the same decision: a call that rang for forty seconds and was never picked up costs nothing at all. ## 2. No connection fee, which is the charge that hides best A connection fee is a fixed amount added to every call regardless of length. It is the single most effective way to make a headline rate look competitive while the bill behaves otherwise, because it is proportionally largest on exactly the short calls that rounding also punishes hardest. It is not a hypothetical practice. In the competitor research behind our [comparison matrix](https://telvio.app/vs/), carried out in March 2026, Skype published a connection charge of $0.049 per call to landlines in the United States, the United Kingdom, India and Mexico, and $0.089 to many mobile destinations. Others in the same set charge a per-call setup fee or a surcharge on particular access routes. Each of those figures is quoted from the service's own published material and dated on the page that uses it. Telvio charges none. There is no per-call fee, no minimum duration, no monthly charge and no inactivity deduction. The complete list of what you pay is: the destination's rate, multiplied by the seconds you were connected. ## 3. Credit that does not expire Prepaid credit that expires is a quiet transfer from the customer to the company, and it is common. In the same March 2026 research, several well-known services documented credit that lapses after a period of inactivity, and one of them — Skype — published a 180-day inactivity rule. A balance you bought and did not spend fast enough simply stops being yours. Telvio credit has no expiry, no inactivity clock and no monthly deduction. Buy the $1.99 pack, call once, come back in a year and the remainder is still there. This is also why the honest advice for a destination you have not called before is to buy the smallest pack: there is no penalty for topping up later and no reward for committing now. The same decision explains the absence of a subscription. There is no plan to choose, no minutes bundle to use up before it renews, and nothing to cancel. If you find a recurring charge on a statement, it is not from this app. ## 4. No account, which changes what can go wrong You do not register, and there is nothing to register with. No name, no email address, no phone number, no password and no social login. The app generates a random installation identifier that holds your balance, and that is the whole of your relationship with us. The immediate benefit is that you can install the app and make a call in under a minute, with a free trial minute so you can hear the line before spending anything. The larger benefit is structural: **a company that never collected your details cannot lose them.** There is no user database to breach, no email list to leak or sell, no password to reuse, and no marketing consent to have quietly assumed. Payment runs through Apple and Google, so we never see a card number either. There is a real cost to this, and it is worth being straight about. Because we hold nothing that identifies you, we cannot find your records from a name or an email address — to exercise a privacy right or to move a balance to a new phone, you need the installation ID from the app's settings screen. Lose it and we may genuinely be unable to identify your data. That is the price of not being able to identify you, and we think it is the right trade, but it is a trade. ## The price on the page is the price the app bills This one is invisible from the outside and it is the decision we would defend hardest. Every rate on this website is derived from the carrier's own price sheet at build time, through the same code path the app uses to bill. No price is typed into a page by a person. The reason is a failure we have already lived through. When our carrier changed in August 2026, the entire price sheet moved: the United Kingdom went from the most expensive destination on the site to the cheapest, and India went the other way. Every rate updated automatically. What did not update, because a person had written it, was the prose around the numbers — sentences naming a country that used to be cheap. Those sentences were wrong the moment the account switched, and nothing detected it. So the copy on this site now names the *shape* of the price sheet rather than a country: “from $0.03 a minute” and “41 destinations” are computed on every build, and the build fails if a page ships an unsubstituted placeholder. It is an unglamorous piece of engineering and it is the reason you can trust a number on this site to match what the app charges. ## What Telvio is not This section is here because the alternative — letting you discover these after you have paid — is how a cheap product produces angry customers. Every item is permanent. - **It cannot receive calls.** Telvio places outgoing calls only and assigns you no number of your own. Everyone you ring sees the app's number, [(434) 280-0044](https://telvio.app/caller-id/1-434-280-0044/), and cannot call it back. - **It cannot send or receive text messages.** There is no SMS capability at all, which also means it cannot receive a verification code from a bank or a website. - **It cannot reach emergency services.** An internet call carries no verified location, so an emergency operator would not know where to send help. Use your phone's own dialler — see [emergency calls](https://telvio.app/legal/emergency-calls/). - **It does not reach everywhere.** There are 41 destinations with a route and a published price. Where there is no route, the app declines rather than connecting at a price it cannot promise. - **It is not a messenger.** No chat, no video, no groups, no app-to-app calling. It dials telephone numbers, and that is the entire product. - **It is not a SIM or a mobile plan.** It uses your existing data connection. Your own number, your own operator and your own plan are unaffected. ## Who is behind it Telvio is published by **Vast Flow, LLP**, which is the company named on the App Store and Google Play listings, on the [privacy policy](https://telvio.app/privacy/) as data controller, and on the [terms of service](https://telvio.app/terms/). Calls are carried by a licensed telecommunications carrier, named in the privacy policy along with every other processor that touches your data. The outbound number every call displays is published on [its own page](https://telvio.app/caller-id/), with the company that holds it named on it. That is unusual in this market and it is deliberate: the alternative is letting a crowdsourced spam board write the first thing anybody learns about the company. Everything a serious telecommunications business is expected to publish is published, at stable URLs, dated: [the emergency call limitation](https://telvio.app/legal/emergency-calls/), [what may not be done with the service](https://telvio.app/legal/acceptable-use/), [how to report an abusive call](https://telvio.app/legal/report-a-call/), [how a lawful request is handled](https://telvio.app/legal/law-enforcement/), [how to report a vulnerability](https://telvio.app/legal/security/) and [what this website stores](https://telvio.app/legal/cookies/). The [trust centre](https://telvio.app/legal/) is the index. ## Who this is for, and who it is not for It is for somebody with people to call in another country and no wish to buy a plan for it: a worker calling home, a family split across borders, a traveller who needs to reach a hotel or a bank, somebody whose relatives do not have — or will not install — a messaging app. The common thread is calling an ordinary telephone number, often briefly, often to someone who is not going to install anything. It is not for you if you need a number people can call you on, if you need SMS, if you want video or group calls, or if the people you call are already reachable on a messenger you both use. In that last case a messenger is free and this is not, and no amount of per-second billing beats zero. [The comparison matrix](https://telvio.app/vs/) lays out which of twenty-seven services can dial a real phone number and which cannot, which is the line that decides this. If you are somewhere in between, the free minute exists precisely for that. Install, call the number you actually care about, listen. It costs nothing and it needs no account, which means the decision is yours to make with evidence rather than with marketing. ## Bottom line Four decisions: per-second billing, no connection fee, credit that never expires, and no account. Together they mean the per-minute rate you compare is the amount you actually pay, which is not true of most of this market. Rates start at $0.03 a minute across 41 destinations, published in full and derived from the carrier's price sheet rather than written by hand. It cannot receive calls or texts, cannot give you a number, cannot reach emergency services, and is not a messenger. Those limits are permanent, and knowing them before you pay is the point of this page. ## Frequently asked questions What makes Telvio different from other international calling apps? Four things: billing per second instead of rounding up to the minute, no connection fee on any call, credit that never expires, and no account of any kind. Together they mean the headline per-minute rate is what you actually pay. Does Telvio require registration? No. There is no account, no name, no email address, no phone number and no password. The app generates an anonymous installation identifier that holds your credit balance, and that is the entire relationship. Does Telvio charge a connection fee? No. There is no per-call fee, no minimum duration, no monthly charge and no inactivity deduction. The total cost of a call is the destination's rate multiplied by the seconds you were connected. Does Telvio credit expire? No. There is no expiry date and no inactivity clock, so a balance you bought and did not use remains available. Several well-known calling services void unused credit after a period of inactivity; this one does not. How cheap is Telvio? Rates start at $0.03 a minute and vary by destination across 41 countries and territories. Every rate is published on the rates page and is derived from the carrier's own price sheet at build time rather than typed by hand. Can I receive calls or texts on Telvio? No. Telvio places outgoing calls only, assigns no phone number, and has no SMS capability in either direction. Everyone you call sees the app's own outbound number and cannot ring it back. Can Telvio call emergency services? No, and this is permanent by design. An internet call carries no verified location, so an emergency operator could not be told where to send help. Use your phone's built-in dialler, which reaches emergency services without credit or a data connection. Is Telvio a replacement for WhatsApp or Signal? No, they solve different problems. Messengers call other installs of the same app for free and cannot dial an ordinary telephone number. Telvio dials telephone numbers and does nothing else, which is what makes it useful for reaching people who will not install anything. ## Start calling worldwide Download Telvio free. Your first minute is on us. [Download Telvio](https://telvio.app/download/) --- HTML version: https://telvio.app/why-telvio/ Structured data for this site: https://telvio.app/api/v1/openapi.json · https://telvio.app/llms.txt Free to quote and reuse with a link back to the source URL above (CC BY 4.0). --- **Download for iPhone, iPad, Mac and Android** > Telvio runs on iPhone, iPad, Mac and Android. Free download, one free minute, rates from $0.03/min to 200+ countries. No registration and no contracts. Source: https://telvio.app/download/ · updated: 2026-08-19 Free download # Telvio runs on four kinds of device Telvio is a free calling app for iPhone, iPad, Mac and Android that dials ordinary landline and mobile numbers over the internet. Every build carries the same rates, the same per-second billing and the same one free minute, and none of them requires an account. One app, four builds, one rate sheet. Pick the machine you actually want to call from — each page below answers the question that platform raises, not the same page four times. [Get it for iPhone, iPad or Mac](https://apps.apple.com/app/apple-store/id6760557111?pt=127157325&ct=telviosite-iphone&mt=8) Free on the App Store · iOS 15.6 [Get it for Android](https://play.google.com/store/apps/details?id=com.telvio.app&referrer=utm_source%3Dtelvio.app%26utm_medium%3Dwebsite%26utm_campaign%3Dtelviosite-android) Free on Google Play · Android 7.0 ## Choose your device Each of these is a different argument, because each platform raises a different question. [![](https://telvio.app/images/screenshots/iphone/en/1.webp) Telvio for iPhone iOS 15.6 Why an app when the iPhone already dials — and what your carrier's international tariff actually costs you. iPhone details](https://telvio.app/download/iphone/)[![](https://telvio.app/images/screenshots/ipad/en/2.webp) Telvio for iPad iPadOS 15.6 The iPad has no Phone app and its SIM buys data, not voice. This is how it dials a real number anyway. iPad details](https://telvio.app/download/ipad/)[![](https://telvio.app/images/screenshots/mac/en/1.webp) Telvio for Mac macOS 11.5 (Big Sur) A native Mac app that calls without relaying through your iPhone, on every Mac back to 2013. Mac details](https://telvio.app/download/mac/)[![](https://telvio.app/images/screenshots/iphone/en/1.webp) Telvio for Android Android 7.0 Calls abroad without touching your SIM, your number or your plan. Android 7.0 and later. Android details](https://telvio.app/download/android/) ## What each build can do The differences are hardware, not policy. Rates, billing and the absence of an account are identical everywhere. *Read off the App Store and Google Play listings for Telvio on 20 August 2026. Free to reuse with a link to this page.* | | iPhone | iPad | Mac | Android | | --- | --- | --- | --- | --- | | Minimum OS | iOS 15.6 | iPadOS 15.6 | macOS 11.5 | Android 7.0 | | Calls any landline or mobile | Yes | Yes | Yes | Yes | | Works with no SIM in the device | Yes | Yes | Yes | Yes | | Needs another device nearby | No | No | No | No | | Per-second billing, no connection fee | Yes | Yes | Yes | Yes | | Account required | No | No | No | No | | Where credit is bought | App Store | App Store | Mac App Store | Google Play | *Read off the App Store and Google Play listings for Telvio on 20 August 2026. Free to reuse with a link to this page.* ## One purchase, four builds, one balance per device Telvio is a universal purchase on Apple's side: the same App Store entry installs the iPhone, iPad and Mac builds, and buying it on one does not cost anything on the others. The Android build is a separate listing on Google Play, because the two stores are separate businesses, but it is the same app and the same rate sheet. Call credit works the other way round, and this catches people out often enough to be worth stating plainly: **credit lives on the device that bought it.** Money added on a phone stays on that phone; it does not appear on the Mac. That is not a restriction we chose for its own sake — it is the direct consequence of there being no account. An account is what would let a balance follow you between devices, and an account is also an email address, a password, a record with your name on it and something to lose in a breach. We took the trade the other way. In practice it matters less than it sounds, because the rates are identical everywhere. A minute to the United States costs the same dialled from a laptop as from a phone, so a balance in the wrong place costs you nothing but the inconvenience of topping up twice. If you expect to call from two devices regularly, put a small pack on each rather than a large one on either. The free minute follows the same rule: every new install gets one, on every device. Four installs is four free minutes, which is enough to test the corridor you actually care about on each of them before spending anything. ## What you get, on every one of them ### Cheap rates Call the United Kingdom for $0.03/min and Mexico for $0.05/min. No hidden fees and no connection charges. ### Calls over any connection Wi-Fi, 4G, 5G or Ethernet. Call from a hotel, an airport or a desk anywhere in the world. ### No registration No account, no email, no phone number required. Download, open, and start dialling immediately. ## How it works Step 1 ### Download Get Telvio from the App Store, the Mac App Store or Google Play. The dial pad is the first screen — there is no onboarding to click through. Step 2 ### Dial Enter any phone number with its country code, or pick from your contacts. The rate per minute shows before you call. Step 3 ### Talk Your call connects over the internet. The other person answers their regular phone. No app is needed on their end. ## What makes Telvio different ### No registration whatsoever Most calling apps require an email, a phone number or a social login. Telvio requires nothing. Download, open, call — and there is no account for anyone to breach. ### Minutes that never expire Skype credit went dormant after 180 days of inactivity, and Viber Out credit runs on a similar clock. Telvio credit stays on the device permanently. ### Per-second billing Some services bill in 60-second blocks, so a 61-second call costs two minutes. Telvio bills to the nearest second, with no connection fee. ### Calls real phone numbers Unlike WhatsApp or Signal, Telvio connects to actual landlines and mobiles. The person you call needs no app and no internet connection. 200+ Countries covered $0.03 Cheapest per-minute rate 0 Registration steps ∞ Minute expiration ## Ready to call? Your first minute is free. No strings attached. [Get it for iPhone, iPad or Mac](https://apps.apple.com/app/apple-store/id6760557111?pt=127157325&ct=telviosite-iphone&mt=8) Free on the App Store · iOS 15.6 [Get it for Android](https://play.google.com/store/apps/details?id=com.telvio.app&referrer=utm_source%3Dtelvio.app%26utm_medium%3Dwebsite%26utm_campaign%3Dtelviosite-android) Free on Google Play · Android 7.0 ## Download questions Is Telvio free to download? Yes, on every platform. The app is free on the App Store, the Mac App Store and Google Play, and every new install includes one free minute to call any country. Additional credit is a one-time in-app purchase starting at $1.99. Do I need to create an account or register? No. Telvio requires no registration, no email address and no phone number. Download the app, open it, and start dialling — you can make your first call within seconds of installing, on any of the four platforms. What devices are supported? iPhone and iPad on iOS or iPadOS 15.6 and later, Mac on macOS 11.5 Big Sur and later, and Android phones and tablets on Android 7.0 and later. Every build needs a Wi-Fi or mobile data connection to place a call. Is my credit shared between my devices? No. Credit is held on the device that bought it, which is a direct consequence of there being no account. Buying credit on a phone does not put it on a Mac. The rates are identical everywhere, so nothing is lost either way. How much storage does the app use? About 59 MB on iPhone, iPad and Mac. On Android it varies by device, because Google Play delivers an app bundle and each phone downloads only the code and resources it needs. Can I use Telvio on a tablet? Yes, on both iPad and Android tablets — and on a tablet the app often supplies a capability the hardware lacks, because a tablet sold with a cellular SIM usually carries a data plan rather than a voice plan and cannot dial a number through its built-in dialler. Does the price change depending on the device I call from? No. Rates are set per destination, not per platform, and the published rate sheet is one document for every build. There is no platform surcharge. ## What happens after you install 1. 1 ### Open the app and dial There is no sign-up. No email, no password, no phone number verification, no identity check. The dial pad is the first screen. 2. 2 ### Enter the number in full international form Country code first, and without the destination's trunk prefix — the leading 0 that belongs to domestic dialling only. Keeping it is the single most common reason an international call fails. 3. 3 ### Use the free minute Every new install includes one minute of credit. Spend it on the corridor you actually care about: call quality is per-destination, so a minute to the number you will really be calling tells you more than any review. 4. 4 ### Top up if you want to keep going Three packs, bought through the App Store. Credit is spent at the per-country rate and does not expire. ## What it needs | Device | iPhone or iPad on iOS or iPadOS 15.6 or later, Mac on macOS 11.5 or later, Android phones and tablets on Android 7.0 or later. Each platform has its own page — [iPhone](https://telvio.app/download/iphone/), [iPad](https://telvio.app/download/ipad/), [Mac](https://telvio.app/download/mac/), [Android](https://telvio.app/download/android/) — because each raises a different question. | | --- | --- | | Connection | WiFi or mobile data. A voice call uses roughly 30–40 kbit/s in each direction, which a weak mobile signal carries comfortably. What it tolerates badly is a connection losing packets in bursts, which sounds like broken-up speech rather than a dropped call. | | Storage | About 59 MB on Apple platforms. On Android it varies by device, because Google Play delivers an app bundle and each phone downloads only what it needs. There is no media library and no background service inflating it. | | Permissions | The microphone, because it is a phone. Nothing else is required to place a call. | | The other person | Nothing at all. The call arrives as an ordinary telephone call on any phone, including a landline. | ## Before the first call, check two things **The number.** Paste it into the [number validator](https://telvio.app/tools/phone-number-validator/) to confirm the country, the length and whether it is a mobile or a landline. In most countries a mobile costs more to reach, sometimes several times more, and the leading digits say which you have. **Your microphone.** If you are on a headset you have not used for calls, the [microphone test](https://telvio.app/tools/mic-test/) takes ten seconds and catches the two problems a call will not: a level too low for anyone to understand, and a Bluetooth headset that has dropped into hands-free mode. Neither is required. Both are faster than debugging a call that is already in progress with somebody waiting on the other end. ## What the app will not do - **Reach emergency services.** Telvio cannot call emergency numbers and must not be relied on for them. This is true of every internet calling application; use your mobile network for emergencies. - **Give you an incoming number.** Telvio places calls. If you need a number people can ring you on, that is a virtual number service — a different product, covered in [the guides](https://telvio.app/guide/). - **Work without an internet connection.** There is no fallback to the cellular voice network, by design: routing over the network is what makes the call cost cents instead of dollars. - **Carry your balance to a new phone.** With no account, credit lives on the device. That is the trade-off for having no sign-up, and it is worth knowing before you buy a large pack. - **Record your calls.** Nothing is recorded, so there is nothing to retrieve or leak. ## If the first call does not work 1. 1 ### Check the number, not the app By a wide margin the most common cause is a trunk prefix left in place — the leading 0 that belongs to domestic dialling. Run the number through the [validator](https://telvio.app/tools/phone-number-validator/): it names the country, checks the length against that country's numbering plan and flags a number that is too short or too long. 2. 2 ### Check that credit is not the issue A call with no credit fails immediately rather than ringing. The free minute covers a first call; after that, the balance is shown on the dial screen. 3. 3 ### Switch network once Voice tolerates low bandwidth and not packet loss. If a call connects and then breaks up, one test call on a different network — WiFi against mobile data — identifies which side is dropping packets faster than any description of the symptom. 4. 4 ### Check the destination is one we route to Not every number range can be reached from an internet calling app. Premium-rate, freephone and short-code ranges are excluded industry-wide, and a call to one is refused rather than billed. 5. 5 ### Then write to us With the number in full international form and roughly when you tried. That is usually enough to answer on the first reply — [the contact page](https://telvio.app/contacts/) has the address and what else helps. ## Bottom line Install, open, dial. No account, no email, no verification, and one free minute so you can hear the quality on your own corridor before spending anything. iOS or iPadOS 15.6, macOS 11.5 or Android 7.0, any internet connection, and nothing at all required of the person you call. It cannot reach emergency services and it does not give you an incoming number — both by design, and both worth knowing before you rely on it. If you want to see what the app costs before installing it, the destination pages carry every published rate and the cost calculator prices a call of any length. Nothing on this site requires the app, and none of the free tools asks you to install anything to use them. ## Frequently asked questions Is Telvio free to download? Yes. The app costs nothing and there is no subscription. You only pay for call credit when you want to place a call, and every new install includes one free minute so you can hear the quality on your own corridor first. Do I need to create an account? No. There is no email, no password and no phone number verification — the dial pad is the first screen. Note that with no account, credit lives on the device and does not carry across to a new phone. Which devices are supported? iPhone and iPad on iOS or iPadOS 15.6 and later, Mac on macOS 11.5 Big Sur and later, and Android phones and tablets on Android 7.0 and later. How much data does a call use? Roughly 30 to 40 kilobits per second in each direction, or about 15 megabytes for an hour of talking. Stability matters more than speed: a connection losing packets in bursts breaks up speech even when the raw bandwidth is ample. How much storage does the app need? Under 50 megabytes. There are no background services, no media library and no call recordings, because calls are not recorded. Can I use Telvio on a tablet? Yes, on an iPad with a WiFi or mobile data connection. The app does not need a SIM card or a phone number of its own, on any device. --- HTML version: https://telvio.app/download/ Structured data for this site: https://telvio.app/api/v1/openapi.json · https://telvio.app/llms.txt Free to quote and reuse with a link back to the source URL above (CC BY 4.0). --- **Telvio Caller ID — The Numbers Our Calls Come From** > Every number Telvio calls from, published by the company that holds it. What caller ID means on an internet call, why it cannot be your own number, and how to report… Source: https://telvio.app/caller-id/ · updated: 2026-09-04 1. [Home](https://telvio.app/) 2. Caller ID Transparency # The numbers Telvio calls from Most people who read this page arrived from a search for a number that rang them. Here is the full list, what each number is for, and what to do about a call you did not expect. - Published by the number's owner - Outbound only - Never used for SMS In one paragraph Telvio places outgoing calls only, and every one of them displays a single number: **+14342800044**. It identifies the app rather than the person dialling, it accepts no incoming calls and no text messages, and it never changes from user to user. If a call from it needs reporting, [support@telvio.app](mailto:support@telvio.app) reaches the team that acts on it. - [(434) 280-0044 Outgoing calls from the Telvio app What this number is →](https://telvio.app/caller-id/1-434-280-0044/) ## The register One number, one purpose. We do not rotate numbers between users, we do not lease a pool of local numbers to make calls look domestic, and we do not display a number we do not hold. Those three practices are common in this industry, they are the mechanism behind most caller ID abuse, and refusing them is why this page can be one row long. | (434) 280-0044 | The outbound caller ID for every call placed through the Telvio app, worldwide. Outgoing only, no SMS. [Full details for this number](https://telvio.app/caller-id/1-434-280-0044/). | | --- | --- | ## Why a calling app shows its own number instead of yours Caller ID is not information the telephone network discovers. It is information the originating side asserts, and the network then carries. That is the whole design, and it is the reason caller ID can be abused at all: an assertion is only as trustworthy as the rules about who is allowed to make it. Those rules have tightened considerably. Carriers in the United States and in a growing list of other countries now expect a caller to demonstrate a right to the number it presents, and calls that cannot be attested are increasingly labelled or dropped before they ring. An app that let each user display their own mobile number would be asserting ownership of tens of thousands of numbers it has no relationship with, which is not a feature — it is the definition of the thing the rules exist to stop. So a well-behaved app presents a number it genuinely holds and presents it consistently. The cost is that the person you call sees an unfamiliar number the first time. The benefit is that the call is attributable: somebody real holds that number, publishes who they are, and can be contacted about it. This page is that benefit, made usable. ## What we do not do with the number - **We do not spoof.** No call placed through Telvio can display a number other than the one on this page — not your number, not a local number in the country you are calling, not a number belonging to a bank or an official body. - **We do not send text messages.** Telvio has no SMS capability at all. A text displaying our number was not sent by us or through our carrier. - **We do not call you.** The company places no calls of its own: no sales, no surveys, no support callbacks, no billing chases. Our contact with users is by email, from this domain. - **We do not sell or rent the number.** It is used by the app and by nothing else, and it is not sublet to a marketing operation between calls. - **We do not automate dialling.** Calls are placed one at a time, by a person tapping a keypad, against prepaid credit. Bulk and automated calling is prohibited by the [acceptable use policy](https://telvio.app/legal/acceptable-use/) and is grounds for suspension. ## How to judge a call from a number you do not recognise This section is not about us. It is the advice we would give a relative, and it is here because most people reading this page are trying to answer a question about one specific call rather than about a company. The number displayed on an incoming call is weaker evidence than almost everybody assumes. It is asserted by the originating side and passed along by every carrier in between, any of which may replace it, shorten it or drop it. That makes it useful for recognising a call you were expecting and close to useless for deciding whether an unexpected one is honest. A number you know is reassuring; a number you do not know means only that you do not know it. What is strong evidence is the request. Every serious telephone fraud, in every country, converges on the same small set of asks, because those are the ones that turn a conversation into money. Somebody wants you to move funds to a “safe account”. Somebody wants a code that has just arrived by text. Somebody wants you to install an app so they can help you. Somebody wants card details, a password, or a payment in gift cards or cryptocurrency. No bank, tax authority, police force, courier or software company asks for any of those on a call you did not initiate, and no legitimate caller is harmed by you hanging up to check. The defence that works against all of it costs nothing and needs no expertise: end the call and dial the organisation back on a number you found yourself, from a statement, a card, or the organisation's own website. Do not use a number the caller gave you and do not simply redial the number that called you. On a landline, wait a few seconds or use a different phone, because an older line can stay open after you hang up. - **Urgency is the tell.** Every version of this depends on you acting before you think. A real institution will wait while you call back. - **A code sent to you is for you.** Anybody asking you to read out a one-time code is asking for the key to an account, whoever they claim to be. - **Remote-access software is the end of the conversation.** No support desk you did not call needs control of your phone or your computer. - **Unusual payment methods mean fraud.** Gift cards, cryptocurrency and money transfer to a person are used because they cannot be reversed. That is the whole reason they are asked for. - **Report it even when you did not lose anything.** Regulators act on patterns, and a pattern is built from single reports. The bodies to contact for your country are listed on our [reporting page](https://telvio.app/legal/report-a-call/). ## If a call from our number was a problem The service is open to the public, so we cannot promise that every call placed through it was welcome. What we can do is act on the ones that were not, and act quickly, because every call is tied to a funded account and a timestamp. Send the date, the time, your time zone and the number that was called to [support@telvio.app](mailto:support@telvio.app). You do not need an account with us and you do not need to prove anything. Our [reporting policy](https://telvio.app/legal/report-a-call/) sets out what we do with a report, how long it takes, and what we can and cannot tell you afterwards. ## If you use Telvio Everyone you call sees (434) 280-0044, so the first call to any given person arrives from a number they do not recognise, and a relative who screens unknown numbers will not pick up. Send them the number before you dial and ask them to save it under your name — after that, your calls arrive with your name attached and nothing about the experience is unusual. They cannot ring you back on it. Your own mobile number still works exactly as it always did; the app number is the app's identification, not a second line. If you want a number people can call you on, this is not the product for that, and [what Telvio is and is not](https://telvio.app/why-telvio/) says so in more detail. ## Bottom line Telvio calls from one number, +14342800044, and publishes it here because the alternative is letting a crowdsourced spam board write the first thing anybody learns about the company. The number is outbound only, carries no text messages, and identifies the app rather than the caller. Calling it reaches nothing; reporting a call reaches somebody who can act. If you arrived from a search for the digits, [the page for that number](https://telvio.app/caller-id/1-434-280-0044/) answers the rest — what area code 434 is, why calling back does not work, and how to block it. ## Frequently asked questions What number does Telvio call from? Every call placed through the Telvio app displays +14342800044, written (434) 280-0044 in the North American format. It is the only number the service uses and it is the same for every user in every country. Does Telvio use different numbers in different countries? No. There is one outbound number worldwide. Some services lease pools of local numbers so calls appear domestic to the person receiving them; Telvio does not, because a number that changes to suit the destination is the pattern caller ID rules exist to discourage. Can Telvio show my own mobile number to the person I call? No, and no app of this kind can do it honestly. Displaying a number means asserting to the network that you are entitled to use it, and carriers increasingly verify that assertion. The app shows a number it genuinely holds instead. Does Telvio ever call its users? No. The company places no calls at all — only users of the app do. Any call claiming to be from Telvio support, Telvio billing or Telvio security is not from us. We contact users only by email, from an address on telvio.app. Can I receive calls or texts on the Telvio number? No. The number is outbound only and Telvio has no SMS capability, so nothing arrives on it in either direction. The app does not assign users a phone number of their own. How do I report a call from a Telvio number? Email support@telvio.app with the date, the time, your time zone and the number that was called. That is enough to identify the specific call and the account behind it, and you do not need to be a Telvio user to report one. ## What people usually need next - [The number, in full What it is, why calling it back reaches nobody, and how to block it.](https://telvio.app/caller-id/1-434-280-0044/) - [Report a call A scam, a nuisance or a threat. No account and no proof needed — a date and a time is enough.](https://telvio.app/legal/report-a-call/) - [If you use the app Why the people you call see a number that is not yours, and the one message that fixes it.](https://telvio.app/help/they-see-an-unknown-number/) - [What the service may not be used for No bulk calling, no automation, no impersonation. Breach suspends the account and freezes its credit.](https://telvio.app/legal/acceptable-use/) - [Why Telvio works this way The four billing decisions behind the app, and the list of things it deliberately cannot do.](https://telvio.app/why-telvio/) - [Trust centre Every policy we publish, dated, in one index.](https://telvio.app/legal/) --- HTML version: https://telvio.app/caller-id/ Structured data for this site: https://telvio.app/api/v1/openapi.json · https://telvio.app/llms.txt Free to quote and reuse with a link back to the source URL above (CC BY 4.0). --- **How to Call Any Country — Dialing Guides** > Dialling instructions for 136 countries: the exit code you dial to leave your own, the country code, the leading zero rule, and the mistakes that stop a call. Source: https://telvio.app/how-to-call/ Dialing Guide # How to call any country Exit codes, country codes, area codes, and phone number formats. Pick a country for step-by-step instructions. ## Popular Countries [🇮🇳 India](https://telvio.app/how-to-call/india/)[🇲🇽 Mexico](https://telvio.app/how-to-call/mexico/)[🇵🇭 Philippines](https://telvio.app/how-to-call/philippines/)[🇬🇧 United Kingdom](https://telvio.app/how-to-call/united-kingdom/)[🇨🇳 China](https://telvio.app/how-to-call/china/)[🇳🇬 Nigeria](https://telvio.app/how-to-call/nigeria/)[🇺🇸 United States](https://telvio.app/how-to-call/united-states/)[🇨🇦 Canada](https://telvio.app/how-to-call/canada/)[🇩🇪 Germany](https://telvio.app/how-to-call/germany/)[🇧🇷 Brazil](https://telvio.app/how-to-call/brazil/)[🇵🇰 Pakistan](https://telvio.app/how-to-call/pakistan/)[🇰🇷 South Korea](https://telvio.app/how-to-call/south-korea/)[🇯🇵 Japan](https://telvio.app/how-to-call/japan/)[🇫🇷 France](https://telvio.app/how-to-call/france/)[🇦🇺 Australia](https://telvio.app/how-to-call/australia/)[🇨🇴 Colombia](https://telvio.app/how-to-call/colombia/)[🇹🇷 Turkey](https://telvio.app/how-to-call/turkey/)[🇪🇬 Egypt](https://telvio.app/how-to-call/egypt/)[🇿🇦 South Africa](https://telvio.app/how-to-call/south-africa/)[🇻🇳 Vietnam](https://telvio.app/how-to-call/vietnam/) ABCDEFGHIJKLMNOPQRSTUVYZ ### A [🇦🇫 Afghanistan +93](https://telvio.app/how-to-call/afghanistan/)[🇦🇱 Albania +355](https://telvio.app/how-to-call/albania/)[🇩🇿 Algeria +213](https://telvio.app/how-to-call/algeria/)[🇦🇴 Angola +244](https://telvio.app/how-to-call/angola/)[🇦🇷 Argentina +54](https://telvio.app/how-to-call/argentina/)[🇦🇲 Armenia +374](https://telvio.app/how-to-call/armenia/)[🇦🇺 Australia +61](https://telvio.app/how-to-call/australia/)[🇦🇹 Austria +43](https://telvio.app/how-to-call/austria/)[🇦🇿 Azerbaijan +994](https://telvio.app/how-to-call/azerbaijan/) ### B [🇧🇭 Bahrain +973](https://telvio.app/how-to-call/bahrain/)[🇧🇩 Bangladesh +880](https://telvio.app/how-to-call/bangladesh/)[🇧🇾 Belarus +375](https://telvio.app/how-to-call/belarus/)[🇧🇪 Belgium +32](https://telvio.app/how-to-call/belgium/)[🇧🇴 Bolivia +591](https://telvio.app/how-to-call/bolivia/)[🇧🇦 Bosnia and Herzegovina +387](https://telvio.app/how-to-call/bosnia-and-herzegovina/)[🇧🇼 Botswana +267](https://telvio.app/how-to-call/botswana/)[🇧🇷 Brazil +55](https://telvio.app/how-to-call/brazil/)[🇧🇬 Bulgaria +359](https://telvio.app/how-to-call/bulgaria/) ### C [🇰🇭 Cambodia +855](https://telvio.app/how-to-call/cambodia/)[🇨🇲 Cameroon +237](https://telvio.app/how-to-call/cameroon/)[🇨🇦 Canada +1](https://telvio.app/how-to-call/canada/)[🇨🇱 Chile +56](https://telvio.app/how-to-call/chile/)[🇨🇳 China +86](https://telvio.app/how-to-call/china/)[🇨🇴 Colombia +57](https://telvio.app/how-to-call/colombia/)[🇨🇷 Costa Rica +506](https://telvio.app/how-to-call/costa-rica/)[🇭🇷 Croatia +385](https://telvio.app/how-to-call/croatia/)[🇨🇾 Cyprus +357](https://telvio.app/how-to-call/cyprus/)[🇨🇿 Czech Republic +420](https://telvio.app/how-to-call/czech-republic/) ### D [🇩🇰 Denmark +45](https://telvio.app/how-to-call/denmark/)[🇩🇴 Dominican Republic +1](https://telvio.app/how-to-call/dominican-republic/)[🇨🇩 DR Congo +243](https://telvio.app/how-to-call/dr-congo/) ### E [🇪🇨 Ecuador +593](https://telvio.app/how-to-call/ecuador/)[🇪🇬 Egypt +20](https://telvio.app/how-to-call/egypt/)[🇸🇻 El Salvador +503](https://telvio.app/how-to-call/el-salvador/)[🇪🇪 Estonia +372](https://telvio.app/how-to-call/estonia/)[🇪🇹 Ethiopia +251](https://telvio.app/how-to-call/ethiopia/) ### F [🇫🇯 Fiji +679](https://telvio.app/how-to-call/fiji/)[🇫🇮 Finland +358](https://telvio.app/how-to-call/finland/)[🇫🇷 France +33](https://telvio.app/how-to-call/france/) ### G [🇬🇪 Georgia +995](https://telvio.app/how-to-call/georgia/)[🇩🇪 Germany +49](https://telvio.app/how-to-call/germany/)[🇬🇭 Ghana +233](https://telvio.app/how-to-call/ghana/)[🇬🇷 Greece +30](https://telvio.app/how-to-call/greece/)[🇬🇹 Guatemala +502](https://telvio.app/how-to-call/guatemala/)[🇬🇾 Guyana +592](https://telvio.app/how-to-call/guyana/) ### H [🇭🇹 Haiti +509](https://telvio.app/how-to-call/haiti/)[🇭🇳 Honduras +504](https://telvio.app/how-to-call/honduras/)[🇭🇰 Hong Kong +852](https://telvio.app/how-to-call/hong-kong/)[🇭🇺 Hungary +36](https://telvio.app/how-to-call/hungary/) ### I [🇮🇸 Iceland +354](https://telvio.app/how-to-call/iceland/)[🇮🇳 India +91](https://telvio.app/how-to-call/india/)[🇮🇩 Indonesia +62](https://telvio.app/how-to-call/indonesia/)[🇮🇶 Iraq +964](https://telvio.app/how-to-call/iraq/)[🇮🇪 Ireland +353](https://telvio.app/how-to-call/ireland/)[🇮🇱 Israel +972](https://telvio.app/how-to-call/israel/)[🇮🇹 Italy +39](https://telvio.app/how-to-call/italy/)[🇨🇮 Ivory Coast +225](https://telvio.app/how-to-call/ivory-coast/) ### J [🇯🇲 Jamaica +1](https://telvio.app/how-to-call/jamaica/)[🇯🇵 Japan +81](https://telvio.app/how-to-call/japan/)[🇯🇴 Jordan +962](https://telvio.app/how-to-call/jordan/) ### K [🇰🇿 Kazakhstan +7](https://telvio.app/how-to-call/kazakhstan/)[🇰🇪 Kenya +254](https://telvio.app/how-to-call/kenya/)[🇽🇰 Kosovo +383](https://telvio.app/how-to-call/kosovo/)[🇰🇼 Kuwait +965](https://telvio.app/how-to-call/kuwait/)[🇰🇬 Kyrgyzstan +996](https://telvio.app/how-to-call/kyrgyzstan/) ### L [🇱🇦 Laos +856](https://telvio.app/how-to-call/laos/)[🇱🇻 Latvia +371](https://telvio.app/how-to-call/latvia/)[🇱🇧 Lebanon +961](https://telvio.app/how-to-call/lebanon/)[🇱🇾 Libya +218](https://telvio.app/how-to-call/libya/)[🇱🇹 Lithuania +370](https://telvio.app/how-to-call/lithuania/)[🇱🇺 Luxembourg +352](https://telvio.app/how-to-call/luxembourg/) ### M [🇲🇬 Madagascar +261](https://telvio.app/how-to-call/madagascar/)[🇲🇾 Malaysia +60](https://telvio.app/how-to-call/malaysia/)[🇲🇹 Malta +356](https://telvio.app/how-to-call/malta/)[🇲🇺 Mauritius +230](https://telvio.app/how-to-call/mauritius/)[🇲🇽 Mexico +52](https://telvio.app/how-to-call/mexico/)[🇲🇩 Moldova +373](https://telvio.app/how-to-call/moldova/)[🇲🇳 Mongolia +976](https://telvio.app/how-to-call/mongolia/)[🇲🇪 Montenegro +382](https://telvio.app/how-to-call/montenegro/)[🇲🇦 Morocco +212](https://telvio.app/how-to-call/morocco/)[🇲🇿 Mozambique +258](https://telvio.app/how-to-call/mozambique/)[🇲🇲 Myanmar +95](https://telvio.app/how-to-call/myanmar/) ### N [🇳🇦 Namibia +264](https://telvio.app/how-to-call/namibia/)[🇳🇵 Nepal +977](https://telvio.app/how-to-call/nepal/)[🇳🇱 Netherlands +31](https://telvio.app/how-to-call/netherlands/)[🇳🇿 New Zealand +64](https://telvio.app/how-to-call/new-zealand/)[🇳🇮 Nicaragua +505](https://telvio.app/how-to-call/nicaragua/)[🇳🇬 Nigeria +234](https://telvio.app/how-to-call/nigeria/)[🇲🇰 North Macedonia +389](https://telvio.app/how-to-call/north-macedonia/)[🇳🇴 Norway +47](https://telvio.app/how-to-call/norway/) ### O [🇴🇲 Oman +968](https://telvio.app/how-to-call/oman/) ### P [🇵🇰 Pakistan +92](https://telvio.app/how-to-call/pakistan/)[🇵🇸 Palestine +970](https://telvio.app/how-to-call/palestine/)[🇵🇦 Panama +507](https://telvio.app/how-to-call/panama/)[🇵🇬 Papua New Guinea +675](https://telvio.app/how-to-call/papua-new-guinea/)[🇵🇾 Paraguay +595](https://telvio.app/how-to-call/paraguay/)[🇵🇪 Peru +51](https://telvio.app/how-to-call/peru/)[🇵🇭 Philippines +63](https://telvio.app/how-to-call/philippines/)[🇵🇱 Poland +48](https://telvio.app/how-to-call/poland/)[🇵🇹 Portugal +351](https://telvio.app/how-to-call/portugal/) ### Q [🇶🇦 Qatar +974](https://telvio.app/how-to-call/qatar/) ### R [🇷🇴 Romania +40](https://telvio.app/how-to-call/romania/)[🇷🇺 Russia +7](https://telvio.app/how-to-call/russia/)[🇷🇼 Rwanda +250](https://telvio.app/how-to-call/rwanda/) ### S [🇸🇦 Saudi Arabia +966](https://telvio.app/how-to-call/saudi-arabia/)[🇸🇳 Senegal +221](https://telvio.app/how-to-call/senegal/)[🇷🇸 Serbia +381](https://telvio.app/how-to-call/serbia/)[🇸🇬 Singapore +65](https://telvio.app/how-to-call/singapore/)[🇸🇰 Slovakia +421](https://telvio.app/how-to-call/slovakia/)[🇸🇮 Slovenia +386](https://telvio.app/how-to-call/slovenia/)[🇿🇦 South Africa +27](https://telvio.app/how-to-call/south-africa/)[🇰🇷 South Korea +82](https://telvio.app/how-to-call/south-korea/)[🇪🇸 Spain +34](https://telvio.app/how-to-call/spain/)[🇱🇰 Sri Lanka +94](https://telvio.app/how-to-call/sri-lanka/)[🇸🇪 Sweden +46](https://telvio.app/how-to-call/sweden/)[🇨🇭 Switzerland +41](https://telvio.app/how-to-call/switzerland/) ### T [🇹🇼 Taiwan +886](https://telvio.app/how-to-call/taiwan/)[🇹🇯 Tajikistan +992](https://telvio.app/how-to-call/tajikistan/)[🇹🇿 Tanzania +255](https://telvio.app/how-to-call/tanzania/)[🇹🇭 Thailand +66](https://telvio.app/how-to-call/thailand/)[🇹🇹 Trinidad and Tobago +1](https://telvio.app/how-to-call/trinidad-and-tobago/)[🇹🇳 Tunisia +216](https://telvio.app/how-to-call/tunisia/)[🇹🇷 Turkey +90](https://telvio.app/how-to-call/turkey/)[🇹🇲 Turkmenistan +993](https://telvio.app/how-to-call/turkmenistan/) ### U [🇺🇬 Uganda +256](https://telvio.app/how-to-call/uganda/)[🇺🇦 Ukraine +380](https://telvio.app/how-to-call/ukraine/)[🇦🇪 United Arab Emirates +971](https://telvio.app/how-to-call/united-arab-emirates/)[🇬🇧 United Kingdom +44](https://telvio.app/how-to-call/united-kingdom/)[🇺🇸 United States +1](https://telvio.app/how-to-call/united-states/)[🇺🇾 Uruguay +598](https://telvio.app/how-to-call/uruguay/)[🇺🇿 Uzbekistan +998](https://telvio.app/how-to-call/uzbekistan/) ### V [🇻🇪 Venezuela +58](https://telvio.app/how-to-call/venezuela/)[🇻🇳 Vietnam +84](https://telvio.app/how-to-call/vietnam/) ### Y [🇾🇪 Yemen +967](https://telvio.app/how-to-call/yemen/) ### Z [🇿🇲 Zambia +260](https://telvio.app/how-to-call/zambia/)[🇿🇼 Zimbabwe +263](https://telvio.app/how-to-call/zimbabwe/) ## The anatomy of an international number Every international call has the same four parts in the same order, and knowing which is which resolves nearly every failure: the exit code, the country code, the area or operator prefix, and the subscriber number. **The exit code belongs to the country you are calling FROM.** It is 011 from the United States and Canada, 00 across most of Europe, Asia and Africa, and 0011 from Australia. It is not a property of the destination, which is why the same foreign number is dialled differently from two different countries — and why an instruction that starts with 011 is wrong for most of the world. **The country code belongs to the destination.** One to three digits, assigned by the ITU, and the one part of the number that never changes. **The area or operator prefix** identifies a city, a region or a mobile network. In most countries it is written with a leading trunk digit when dialled domestically, and that digit is dropped when dialling from abroad. **The subscriber number** is the rest. Its length is fixed by the national numbering plan, so a number one digit short is a typo rather than a shorter valid number. ## The plus sign, and why it is better than any exit code On any mobile, pressing and holding the 0 key enters a plus sign. A number dialled as +44 20 7946 0958 works from every country in the world without you knowing that country's exit code, because the network substitutes the right one. That also makes the plus the correct way to *store* a number. A contact saved in full international form dials correctly whether you are at home, travelling, or on a foreign SIM, and it survives being exported to another phone. A contact saved in local format is only meaningful inside one country. The exception is a landline, which has no plus key. There the exit code has to be dialled, which is what the per-country tables here are for. ## The five mistakes that account for most failed calls - **The trunk prefix was left in.** Dialling +44 *0*20 7946 0958 fails. The leading zero belongs to domestic dialling only. This is the most common failure by a wide margin. - **The wrong exit code.** An American instruction beginning 011 does not work from Europe, where it is 00. Using the plus sign avoids the whole question. - **The country code was missing.** A number copied from a local website looks complete and is unusable from anywhere else. - **A digit out in the country code.** +261, +262 and +263 are three different countries. A wrong country code does not fail cleanly — it connects, to a stranger, and bills. Every dialling guide here lists the codes most plausibly confused with the one it covers. - **Calling a mobile expecting landline pricing.** In most countries a mobile costs more to reach, sometimes several times more. The leading digits tell you which you have before you dial. ## When to call, not just how A technically perfect call to someone asleep achieves nothing and still costs the connection. Each dialling guide carries a table showing what the clock reads at the destination when it is mid-morning, early afternoon and evening in five common calling cities, so the arithmetic is done for you. For a personal call the useful window is roughly 09:00 to 21:00 local at the far end. For a business call it is much narrower — mid-morning local, Tuesday to Thursday, has the highest answer rate almost everywhere, because it falls after the day has settled and before anyone has left. Time zone offsets are not fixed. They change several times a year as each country enters and leaves daylight saving, and the hemispheres shift in opposite directions, so the London–Sydney gap moves through four values across a year. The [planner](https://telvio.app/tools/best-time-to-call/) reads today's offset from your own device rather than quoting one written down in an article. ## Bottom line An international number is exit code, country code, area or operator prefix, subscriber number. The exit code belongs to where you are; everything after it belongs to where you are calling. On a mobile, hold 0 for a plus sign and store every foreign number in full international form. That removes the exit code question entirely and prevents the most common failure of all — the domestic trunk zero left in place. ## Frequently asked questions How do I call another country? Dial your own country's exit code, then the destination country code, then the number without its trunk prefix. On a mobile, press and hold 0 for a plus sign instead of the exit code — the plus works from every country and removes the need to know any local exit code. What is an exit code? The digits that take a call out of the country you are dialling from: 011 in the United States and Canada, 00 across most of Europe, Asia and Africa, 0011 from Australia. It belongs to your location, not the destination, which is why the same foreign number is dialled differently from two different countries. Do I need to remove the 0 from a phone number? Yes, when calling internationally. Most countries prefix domestic numbers with a trunk digit, usually 0, that is not part of the number itself. Dialling +44 020 7946 0958 fails; +44 20 7946 0958 works. This single mistake causes more failed international calls than everything else combined. What does the + sign do in a phone number? It tells the network to substitute the correct exit code for wherever you are. A number stored as +44 20 7946 0958 dials correctly from any country in the world, which is why full international form is the right way to save every foreign contact. How can I tell whether a number is a mobile? By its leading digits. Most countries reserve separate blocks for mobile and fixed lines, and that boundary is not portable between operators, so it stays reliable. The exception is the North American Numbering Plan, where an area code says nothing about line type at all. What happens if I dial the wrong country code? The call usually connects — to a stranger in another country — and bills. Codes like +260, +261, +262 and +263 belong to four different countries, so a single wrong digit does not fail cleanly. Each dialling guide here lists the codes most plausibly confused with the one it covers. --- HTML version: https://telvio.app/how-to-call/ Structured data for this site: https://telvio.app/api/v1/openapi.json · https://telvio.app/llms.txt Free to quote and reuse with a link back to the source URL above (CC BY 4.0). --- **International Calling Rates by Country** > Telvio's calling rates for 94 countries, landline and mobile. Billed per second, no connection fee, credit that never expires — check the price before you dial. Source: https://telvio.app/call/ Calling Rates # Call any country. See the rate first. Per-second billing, no connection fees, credits that never expire. Pick a country to see what you will pay. ## Popular Destinations [🇮🇳 India from $0.24/min](https://telvio.app/call/india/)[🇲🇽 Mexico from $0.05/min](https://telvio.app/call/mexico/)[🇵🇭 Philippines from $1.16/min](https://telvio.app/call/philippines/)[🇬🇧 United Kingdom from $0.03/min](https://telvio.app/call/united-kingdom/)[🇨🇳 China from $4.54/min](https://telvio.app/call/china/)[🇳🇬 Nigeria from $0.32/min](https://telvio.app/call/nigeria/)[🇺🇸 United States from $0.07/min](https://telvio.app/call/united-states/)[🇨🇦 Canada from $0.07/min](https://telvio.app/call/canada/)[🇩🇪 Germany from $0.27/min](https://telvio.app/call/germany/)[🇧🇷 Brazil from $0.14/min](https://telvio.app/call/brazil/)[🇵🇰 Pakistan from $0.15/min](https://telvio.app/call/pakistan/)[🇰🇷 South Korea from $0.17/min](https://telvio.app/call/south-korea/)[🇯🇵 Japan from $0.19/min](https://telvio.app/call/japan/)[🇫🇷 France from $0.35/min](https://telvio.app/call/france/)[🇦🇺 Australia from $0.23/min](https://telvio.app/call/australia/)[🇨🇴 Colombia from $0.11/min](https://telvio.app/call/colombia/)[🇹🇷 Turkey from $0.10/min](https://telvio.app/call/turkey/)[🇪🇬 Egypt from $0.28/min](https://telvio.app/call/egypt/)[🇿🇦 South Africa from $0.49/min](https://telvio.app/call/south-africa/)[🇻🇳 Vietnam from $0.65/min](https://telvio.app/call/vietnam/) ## Americas (17 countries) | Country | Landline | Mobile | | --- | --- | --- | | [🇦🇷 Argentina](https://telvio.app/call/argentina/) | $1.74 | $1.74 | | [🇧🇷 Brazil](https://telvio.app/call/brazil/) | $0.14 | $0.14 | | [🇨🇦 Canada](https://telvio.app/call/canada/) | $0.07 | $0.07 | | [🇨🇱 Chile](https://telvio.app/call/chile/) | $0.14 | $0.14 | | [🇨🇴 Colombia](https://telvio.app/call/colombia/) | $0.11 | $0.11 | | [🇨🇷 Costa Rica](https://telvio.app/call/costa-rica/) | $0.05 | $0.15 | | [🇩🇴 Dominican Republic](https://telvio.app/call/dominican-republic/) | $0.30 | $0.30 | | [🇪🇨 Ecuador](https://telvio.app/call/ecuador/) | $0.30 | $0.63 | | [🇬🇹 Guatemala](https://telvio.app/call/guatemala/) | $0.43 | $0.43 | | [🇭🇹 Haiti](https://telvio.app/call/haiti/) | $0.88 | $0.88 | | [🇭🇳 Honduras](https://telvio.app/call/honduras/) | $0.43 | $0.43 | | [🇯🇲 Jamaica](https://telvio.app/call/jamaica/) | $0.68 | $0.68 | | [🇲🇽 Mexico](https://telvio.app/call/mexico/) | $0.05 | $0.05 | | [🇵🇪 Peru](https://telvio.app/call/peru/) | $0.05 | $0.05 | | [🇹🇹 Trinidad and Tobago](https://telvio.app/call/trinidad-and-tobago/) | $0.20 | $0.20 | | [🇺🇸 United States](https://telvio.app/call/united-states/) | $0.07 | $0.07 | | [🇻🇪 Venezuela](https://telvio.app/call/venezuela/) | $0.09 | $0.18 | ## Europe (27 countries) | Country | Landline | Mobile | | --- | --- | --- | | [🇦🇹 Austria](https://telvio.app/call/austria/) | $0.24 | $0.24 | | [🇧🇾 Belarus](https://telvio.app/call/belarus/) | $0.98 | $0.98 | | [🇧🇪 Belgium](https://telvio.app/call/belgium/) | $0.52 | $0.52 | | [🇧🇬 Bulgaria](https://telvio.app/call/bulgaria/) | $0.23 | $0.95 | | [🇭🇷 Croatia](https://telvio.app/call/croatia/) | $0.43 | $1.13 | | [🇨🇿 Czech Republic](https://telvio.app/call/czech-republic/) | $0.83 | $0.83 | | [🇩🇰 Denmark](https://telvio.app/call/denmark/) | $3.01 | $3.01 | | [🇫🇮 Finland](https://telvio.app/call/finland/) | $2.85 | $2.85 | | [🇫🇷 France](https://telvio.app/call/france/) | $0.35 | $0.35 | | [🇩🇪 Germany](https://telvio.app/call/germany/) | $0.27 | $0.27 | | [🇬🇷 Greece](https://telvio.app/call/greece/) | $3.47 | $3.47 | | [🇭🇺 Hungary](https://telvio.app/call/hungary/) | $0.14 | $0.13 | | [🇮🇪 Ireland](https://telvio.app/call/ireland/) | $0.28 | $0.28 | | [🇮🇹 Italy](https://telvio.app/call/italy/) | $1.67 | $1.67 | | [🇲🇩 Moldova](https://telvio.app/call/moldova/) | $0.95 | $0.70 | | [🇳🇱 Netherlands](https://telvio.app/call/netherlands/) | $0.17 | $0.17 | | [🇳🇴 Norway](https://telvio.app/call/norway/) | $0.26 | $0.26 | | [🇵🇱 Poland](https://telvio.app/call/poland/) | $0.69 | $0.69 | | [🇵🇹 Portugal](https://telvio.app/call/portugal/) | $0.93 | $0.93 | | [🇷🇴 Romania](https://telvio.app/call/romania/) | $0.23 | $0.30 | | [🇷🇺 Russia](https://telvio.app/call/russia/) | $1.57 | $1.57 | | [🇪🇸 Spain](https://telvio.app/call/spain/) | $0.21 | $0.21 | | [🇸🇪 Sweden](https://telvio.app/call/sweden/) | $0.41 | $0.41 | | [🇨🇭 Switzerland](https://telvio.app/call/switzerland/) | $3.67 | $3.67 | | [🇹🇷 Turkey](https://telvio.app/call/turkey/) | $0.10 | $0.50 | | [🇺🇦 Ukraine](https://telvio.app/call/ukraine/) | $0.28 | $0.56 | | [🇬🇧 United Kingdom](https://telvio.app/call/united-kingdom/) | $0.03 | $0.03 | ## Asia & Middle East (34 countries) | Country | Landline | Mobile | | --- | --- | --- | | [🇦🇿 Azerbaijan](https://telvio.app/call/azerbaijan/) | $0.56 | $0.80 | | [🇧🇭 Bahrain](https://telvio.app/call/bahrain/) | $0.30 | $0.30 | | [🇧🇩 Bangladesh](https://telvio.app/call/bangladesh/) | $0.15 | $0.15 | | [🇰🇭 Cambodia](https://telvio.app/call/cambodia/) | $0.28 | $0.28 | | [🇨🇳 China](https://telvio.app/call/china/) | $4.54 | $4.54 | | [🇬🇪 Georgia](https://telvio.app/call/georgia/) | $0.39 | $0.68 | | [🇭🇰 Hong Kong](https://telvio.app/call/hong-kong/) | $0.08 | $0.10 | | [🇮🇳 India](https://telvio.app/call/india/) | $0.24 | $0.24 | | [🇮🇩 Indonesia](https://telvio.app/call/indonesia/) | $0.44 | $0.44 | | [🇮🇶 Iraq](https://telvio.app/call/iraq/) | $0.43 | $0.63 | | [🇮🇱 Israel](https://telvio.app/call/israel/) | $0.10 | $0.30 | | [🇯🇵 Japan](https://telvio.app/call/japan/) | $0.19 | $0.19 | | [🇯🇴 Jordan](https://telvio.app/call/jordan/) | $0.40 | $0.48 | | [🇰🇿 Kazakhstan](https://telvio.app/call/kazakhstan/) | $1.57 | $1.57 | | [🇰🇼 Kuwait](https://telvio.app/call/kuwait/) | $0.19 | $0.24 | | [🇰🇬 Kyrgyzstan](https://telvio.app/call/kyrgyzstan/) | $0.30 | $0.70 | | [🇱🇧 Lebanon](https://telvio.app/call/lebanon/) | $0.28 | $0.53 | | [🇲🇾 Malaysia](https://telvio.app/call/malaysia/) | $0.07 | $0.07 | | [🇲🇲 Myanmar](https://telvio.app/call/myanmar/) | $0.53 | $0.53 | | [🇳🇵 Nepal](https://telvio.app/call/nepal/) | $1.61 | $1.61 | | [🇴🇲 Oman](https://telvio.app/call/oman/) | $0.35 | $0.45 | | [🇵🇰 Pakistan](https://telvio.app/call/pakistan/) | $0.15 | $0.15 | | [🇵🇭 Philippines](https://telvio.app/call/philippines/) | $1.16 | $1.16 | | [🇶🇦 Qatar](https://telvio.app/call/qatar/) | $0.40 | $0.56 | | [🇸🇦 Saudi Arabia](https://telvio.app/call/saudi-arabia/) | $0.30 | $0.38 | | [🇸🇬 Singapore](https://telvio.app/call/singapore/) | $0.17 | $0.17 | | [🇰🇷 South Korea](https://telvio.app/call/south-korea/) | $0.17 | $0.17 | | [🇱🇰 Sri Lanka](https://telvio.app/call/sri-lanka/) | $0.38 | $0.37 | | [🇹🇼 Taiwan](https://telvio.app/call/taiwan/) | $0.05 | $0.38 | | [🇹🇯 Tajikistan](https://telvio.app/call/tajikistan/) | $0.35 | $0.50 | | [🇹🇭 Thailand](https://telvio.app/call/thailand/) | $0.57 | $0.57 | | [🇦🇪 United Arab Emirates](https://telvio.app/call/united-arab-emirates/) | $0.48 | $0.48 | | [🇺🇿 Uzbekistan](https://telvio.app/call/uzbekistan/) | $0.32 | $0.32 | | [🇻🇳 Vietnam](https://telvio.app/call/vietnam/) | $0.65 | $0.65 | ## Africa (13 countries) | Country | Landline | Mobile | | --- | --- | --- | | [🇩🇿 Algeria](https://telvio.app/call/algeria/) | $0.20 | $1.75 | | [🇨🇲 Cameroon](https://telvio.app/call/cameroon/) | $0.43 | $0.95 | | [🇪🇬 Egypt](https://telvio.app/call/egypt/) | $0.28 | $0.33 | | [🇪🇹 Ethiopia](https://telvio.app/call/ethiopia/) | $0.80 | $0.80 | | [🇬🇭 Ghana](https://telvio.app/call/ghana/) | $0.65 | $0.65 | | [🇰🇪 Kenya](https://telvio.app/call/kenya/) | $0.58 | $0.40 | | [🇲🇦 Morocco](https://telvio.app/call/morocco/) | $0.48 | $1.88 | | [🇳🇬 Nigeria](https://telvio.app/call/nigeria/) | $0.32 | $0.32 | | [🇸🇳 Senegal](https://telvio.app/call/senegal/) | $0.56 | $0.98 | | [🇿🇦 South Africa](https://telvio.app/call/south-africa/) | $0.49 | $0.49 | | [🇹🇿 Tanzania](https://telvio.app/call/tanzania/) | $0.95 | $0.95 | | [🇹🇳 Tunisia](https://telvio.app/call/tunisia/) | $2.48 | $2.48 | | [🇺🇬 Uganda](https://telvio.app/call/uganda/) | $0.95 | $0.95 | ## Oceania (2 countries) | Country | Landline | Mobile | | --- | --- | --- | | [🇦🇺 Australia](https://telvio.app/call/australia/) | $0.23 | $0.23 | | [🇳🇿 New Zealand](https://telvio.app/call/new-zealand/) | $0.45 | $0.45 | ## How Telvio billing works Per-second billing You pay for the exact seconds you talk. A 47-second call costs 47 seconds, not 1 minute. No connection fees The rate shown is the only cost. No hidden surcharges, no per-call fees. Credits never expire Buy a pack ($1.99, $4.99, or $9.99) and use it whenever you want. No rush. ## Try your first call free Download Telvio and get 1 free minute. No registration, no card required. [Download Telvio](https://telvio.app/download/) ## What a destination page tells you Each country page answers the same five questions with that country's own numbers: what a minute costs to a landline and to a mobile, what a call of one, five, ten, thirty or sixty minutes costs, how far each credit pack goes at that rate, how to dial the number correctly, and when it is a reasonable hour to ring. The prices are per minute in US dollars and they are the whole price. Billing is per second with no connection fee, so a call that ends at four minutes twelve seconds is charged as four minutes twelve seconds — not rounded up to five. Credit does not expire, so a pack bought for one call keeps its value until the next. Landline and mobile are quoted separately because in most countries they genuinely cost different amounts to reach, and the difference is often large. Where you have a choice of number to call, that is the cheapest decision available to you and it is worth checking before you dial. ## Why the same call costs fifty times more to one country than another The price is mostly not set by the company selling it. It is the wholesale **termination rate**: what the operator at the far end charges to accept the call onto their network and deliver it. Your provider pays that, adds a margin, and quotes the total. Those rates are set by regulation and negotiation and they vary enormously. Where a regulator has driven mobile termination towards cost — North America, Mexico, India — the wholesale price is a fraction of a cent. Where termination is still a protected revenue stream, it can be a hundred times higher. Distance is essentially irrelevant; the terminating operator's tariff is essentially all of it. The practical consequence: a service that is cheapest to one country tells you nothing about another. Compare on the corridor you actually call, which is why every country here has its own page rather than a shared one. ## Getting the number right before you dial 1. 1 ### Drop the trunk prefix Most countries put a leading digit — usually 0 — in front of a number dialled domestically. It is not part of the number. A London number written 020 7946 0958 is +44 20 7946 0958 internationally, never +44 020. This single mistake causes more failed international calls than everything else combined. 2. 2 ### Use the plus sign rather than an exit code On a mobile, press and hold 0 until a plus appears. The plus tells the network to work out the exit code itself, so the same saved number dials correctly from any country you happen to be in. 3. 3 ### Check whether it is a mobile In most countries the leading digits of the national number say whether it is a mobile or a fixed line, and that still holds after a number has been ported between operators. Each country page lists the ranges; the [number validator](https://telvio.app/tools/phone-number-validator/) checks a specific number against them. 4. 4 ### Store it in full international form A number saved as +44 20 7946 0958 works from anywhere and sorts and deduplicates correctly. A number saved as 020 7946 0958 means a London number to a British reader and nothing at all to a phone in another country. ## What is not on these pages - **A competitor rate column.** We hold verified per-country rates for our own service and not for anybody else's; the comparison we publish instead is between per-second and per-minute billing, priced at our own rate, so the arithmetic is checkable rather than asserted. - **Premium and special numbers.** Short codes, premium-rate services and satellite ranges are priced separately by the terminating network and are not covered by a country rate anywhere in the industry. - **Countries we do not price.** A country without a page is one we are not quoting a price for. Its [dialling guide](https://telvio.app/how-to-call/) still exists, because the dialling question has an answer whether or not we sell the call. - **Peak and off-peak.** There is none. Time-of-day pricing belonged to circuit-switched telephony; a VoIP rate is the same at three in the morning as at three in the afternoon. ## When a rate changes Wholesale termination rates are renegotiated and re-regulated regularly, and retail prices follow them in both directions. A rate on this site is what it is today rather than a commitment about next quarter, and it is worth reading it that way. When one changes it changes everywhere at once. Prices are read from a single file at build time and rendered into every page that mentions them, so the destination page, the rate table, the calculator, the hero and the app cannot drift apart. There is no separate marketing copy holding an older number. Credit you already bought is unaffected in the sense that matters: the balance is a dollar amount, not a minute bundle, so a rate change alters how far it goes rather than removing value you paid for. It also never expires, so there is no deadline pushing you to spend it before a change. If a rate on a page does not match what the app charged, that is a bug rather than a policy, and we would rather hear about it — [write to us](https://telvio.app/contacts/) with the country and the figure. ## Bottom line Every destination page carries that country's own per-minute rate for landline and mobile, what calls of common lengths cost, how far each credit pack goes, how to dial the number without the trunk prefix, and when it is a reasonable hour there. Prices are per second with no connection fee and no expiry, and they differ between countries by a factor of fifty because of the terminating operator's wholesale rate rather than distance. Compare any service on the corridor you actually call. Every destination page also links to that country's dialling guide and its area-code table, because the three answer different questions about the same country: what it costs, how to dial it, and which code belongs to which city. If you arrived here to price a call and left needing to dial one, the link is on the page you are already reading. ## Frequently asked questions How do I find the calling rate for a specific country? Open that country's page from the list above. Each one carries the per-minute rate for landlines and mobiles, what calls of one, five, ten, thirty and sixty minutes cost, and how many minutes each credit pack buys at that rate. Why is my country not listed? A country without a page is one we do not currently publish a rate for. That is not a claim the call cannot be placed — only that we are not quoting a price. Its dialling guide still exists under /how-to-call/, because the question of how to dial has an answer either way. Does the rate depend on where I am calling from? No. The rate is a property of the destination, so calling India costs the same from Toronto as from Dubai. What your own location affects is the exit code you dial, and using the plus sign on a mobile removes even that. Is there a minimum call charge? No. Billing is per second from the first second, with no connection fee and no minimum duration. A twelve-second call costs twelve seconds' worth of credit. How is this cheaper than my carrier? Because the call travels over the internet to our network and only touches the telephone network at the far end, so you pay the destination operator's termination rate plus a margin rather than your carrier's roaming tariff. Carrier roaming commonly runs one to three dollars a minute against a few cents here. What does the person I call need? Nothing. The call arrives as an ordinary telephone call on any phone, including a landline — no app, no internet connection and no smartphone. That is what separates this from free messaging apps, which can only reach other users of the same app. --- HTML version: https://telvio.app/call/ Structured data for this site: https://telvio.app/api/v1/openapi.json · https://telvio.app/llms.txt Free to quote and reuse with a link back to the source URL above (CC BY 4.0). --- **Calling App Comparison Matrix — 27 Services, Side by Side** > Which apps can dial a real phone number, which round calls up to the minute, which charge a connection fee and which expire your credit. Filter 27 services. Source: https://telvio.app/vs/ · updated: 2026-09-04 1. [Home](https://telvio.app/) 2. Compare apps Comparison engine # Twenty-seven calling apps, one table Filter by what you actually need — dialling a real phone number, no account, per-second billing, no connection fee, credit that does not expire — and see which services qualify. Every value is quoted from the provider's own published material. - 27 services - 9 comparable fields - Researched March 2026 How to use this The first column is the one that decides most comparisons: **can it dial an ordinary telephone number?** WhatsApp, Signal, Telegram, FaceTime and Discord cannot — they reach other installs of themselves. Everything else in the table reaches a real phone, and is therefore competing on price and terms rather than on features. After that, the fields that decide what you pay are the ones nobody compares: whether calls are **rounded up to a whole minute**, whether there is a **connection fee** on every call, and whether unused **credit expires**. The headline per-minute rate is the same in every billing model; the bill is not. Find a service Show only services that… Call real phone numbersNeed no accountBill per secondCharge no connection feeNever expire creditNeed no subscriptionAre still operating Clear filters Showing 27 of 27 services *27 calling services across 9 fields. Values quoted from each provider's published material, researched March 2026.* | Service | Calls a phone number | Account | Billing | Connection fee | Credit expires | Subscription | Platforms | Status | | --- | --- | --- | --- | --- | --- | --- | --- | --- | | Telvio Ours | Yes | None | Per second | None | Never | No | iOS, iPadOS, macOS, Android | Operating | | Boss Revolution | Yes | Required | Per minute | Charged | Not published | Yes | iOS, Android, Web | Operating | | Dingtone | Yes | Required | Per minute | Not published | Not published | Yes | iOS, Android | Operating | | Discord | No | Required | App to app only | None | Never | Yes | iOS, Android, Web, Windows, macOS, Linux | Operating | | FaceTime | No | Required | App to app only | None | Never | No | iOS, macOS, iPadOS | Operating | | Google Voice | Yes | Required | Per minute | None | Not published | Yes | iOS, Android, Web | Operating | | KeepCalling | Yes | Required | Rounded up | None | Never | Yes | iOS, Android, Web | Operating | | Libon | Yes | Required | Per second | None | Never | No | iOS, Android | Operating | | LINE Out | Yes | Required | Per minute | Not published | Expires | Yes | iOS, Android | Operating | | Localphone | Yes | Required | Per minute | None | Never | Yes | iOS, Android, Web | Operating | | Lycamobile | Yes | Required | Per minute | Charged | Expires | Yes | iOS, Android | Operating | | magicJack | Yes | Required | Per minute | None | Expires | Yes | iOS, Android, Windows, macOS | Operating | | MyTello | Yes | Required | Rounded up | Charged | Not published | No | iOS, Android, Web | Operating | | Nymgo | Yes | Required | Per minute | None | Not published | No | iOS, Android, Windows, macOS | Operating | | Rebtel | Yes | Required | Per minute | None | Not published | Yes | iOS, Android | Operating | | Ringo | Yes | Required | Per minute | None | Not published | No | iOS, Android | Operating | | Signal | No | Required | App to app only | None | Never | No | iOS, Android, Windows, macOS, Linux | Operating | | Skype | Yes | Required | Per minute | Charged | Expires | Yes | iOS, Android, Web, Windows, macOS | Withdrawn | | Talk360 | Yes | Required | Per minute | None | Not published | No | iOS, Android | Operating | | Telegram | No | Required | App to app only | None | Never | Yes | iOS, Android, Web, Windows, macOS, Linux | Operating | | TextNow | Yes | Required | Per minute | None | Not published | Yes | iOS, Android, Web | Operating | | Truphone | Yes | Required | Per minute | Not published | Expires | Yes | iOS, Android | Operating | | Viber Out | Yes | Required | Rounded up | None | Never | Yes | iOS, Android, Web, Windows, macOS | Operating | | Vonage | Yes | Required | Per minute | Not published | Never | Yes | iOS, Android, Web | Operating | | WhatsApp | No | Required | App to app only | None | Never | No | iOS, Android, Web, Windows, macOS | Operating | | Yolla | Yes | Required | Rounded up | None | Never | No | iOS, Android | Operating | | Zoom Phone | Yes | Required | Per minute | None | Never | Yes | iOS, Android, Web, Windows, macOS | Operating | No service matches every filter at once. That is a finding rather than an error — clear one and see which comes closest. Researched 2026-03-18. ## Where the data comes from Every value in the table is taken from a structured research pass over each service's own published material, carried out in March 2026, and each classification is shown with the sentence it was read from on the comparison page for that service. Where the research found no published answer, the cell says so rather than guessing — “not published” is a finding, and filling it with a plausible value would make the whole table worthless. This is deliberately narrower than a review. There is no scoring of call quality, no star rating and no opinion about which app is nicer to use, because none of those can be established from published material and all of them are what makes comparison articles unreliable. What can be established is what a service says it charges, what it says it requires, and where it says it runs — and those are exactly the things that decide a bill. One field is our judgement rather than a quotation: whether a service can dial an ordinary telephone number. The dataset describes it in prose rather than recording it as a value, and it is the axis the whole table turns on, so it is stated per service with the description it was drawn from printed alongside on each comparison page. Rates are not in the matrix, and that is a considered omission. Per-country rates change without notice, most of these services publish them only inside their own apps, and a table of prices captured on one date in one currency would be quietly wrong within weeks. The comparison pages quote the specific corridor rates that were published, with the date attached. ## What each column means | Calls a phone number | Whether the service can reach an ordinary landline or mobile number. “No” means it only reaches other users of the same app, which makes it a different product rather than a cheaper one. | | --- | --- | | Account | Whether using the service requires registering — an email address, a phone number, or a platform account. Twenty-six of the twenty-seven require one. | | Billing | Per second, per minute, or per minute rounded up to the next whole minute. Rounding is the difference between paying for a 35-second call and paying for sixty seconds. | | Connection fee | A fixed charge added to every call regardless of length. It is proportionally largest on short calls, which is where it does the most damage and attracts the least attention. | | Credit expires | Whether unused prepaid credit lapses after a period of inactivity. Where a service publishes an inactivity rule, its comparison page quotes it. | | Subscription | Whether the service offers or requires a recurring plan, as distinct from pay-as-you-go credit. | | Platforms | Where the service runs, as published by the provider. | | Status | Whether the consumer service is currently operating. Skype is marked retired: Microsoft withdrew consumer Skype and its published end of service was May 2026. | ## The three questions this table answers that a listicle does not **“Can this app call my mother's landline?”** Half the apps people are told to use for international calling cannot dial a telephone number at all. That is not a defect — a messenger reaching another messenger for free is a better deal than any paid call, when both people have it. It is simply a different product, and comparisons that put messengers and calling services in one ranked list are comparing things that do not substitute for each other. **“What will this actually cost me?”** The per-minute rate is the number every comparison publishes and it is not the number that decides the bill. A service billing per minute with rounding, plus a connection fee, can cost roughly double a service with the same headline rate on the short calls most people actually make. Those two fields are in this table and are in almost no other. **“What happens to money I do not spend?”** Several well-known services void unused credit after a period of inactivity, and one of them published a 180-day rule. That is a real cost and it appears in no rate comparison anywhere, because it is not a rate. ## How to read a comparison honestly We publish a calling app, so it is worth saying what that does and does not do to a table like this one. Telvio is the first row and is marked as ours. Its values come from the same rate sheet and product data the rest of this site is built from, and they are subject to the same rule as every other price here: nothing is typed by hand. What we have not done is pick the fields to flatter it. The nine columns are the ones a bill actually depends on, and two of them — platforms and subscription — are ones where several competitors do better than we do. Telvio runs on fewer platforms than Skype, Viber, Telegram or Discord; it has no desktop client for Windows or Linux; it has no subscription for anybody who would prefer a fixed monthly cost; and it reaches fewer destinations than the large established carriers. All of that is in the table. The comparison pages linked below go further, because they are about two services neither of which is ours. That is the honest test of a comparison: whether it is still useful when the publisher has nothing to sell in it. ## What a comparison like this cannot tell you Worth stating, because the fields that are missing are as informative as the ones that are here. **Call quality is not in the table and cannot be.** The audio quality of an internet call is decided by the whole path — your connection, the route between the provider's carrier and the destination country, and the operator that finally delivers the call — and none of that generalises between destinations or between weeks. A rating of a service's call quality is a rating of somebody else's calls to somewhere else. The only test that answers the question you have is a call to the number you actually intend to call, which is why most of these services offer a free trial of some kind. **Support is not in the table.** There is no way to establish from published material whether a company answers its email, and a claimed response time is not evidence of one. **Rates are not in the table**, for the reason given above: most of these services publish prices only inside their own apps, and the ones that do publish change them without notice. Individual comparison pages quote the corridor figures that were published, with a date attached, and where a provider published nothing they say so — which is itself a comparison, and not a flattering one. **Nothing here is a recommendation.** The table records what each service says it does. Which of them is right for you depends on who you call and how, and those are facts about you that no comparison can supply. ## Bottom line Twenty-seven services across nine fields, every value quoted from the provider's own published material and dated March 2026. The first question is whether a service can dial an ordinary telephone number, because five of the best-known cannot. After that, rounding, connection fees and credit expiry decide the bill more than the headline rate does. Where the research found no published answer, the cell says “not published”. That is a finding about the provider's transparency, and it is more useful than a plausible guess. ## Frequently asked questions Which calling apps can dial a real phone number? Most of the twenty-seven in this table can, but five of the best known cannot: WhatsApp, Signal, Telegram, FaceTime and Discord reach only other installs of the same app. That is the first filter to apply, because an app that cannot dial a telephone number is not an alternative to one that can. Which calling apps charge a connection fee? The table marks each service as charging a fee, charging none, or not publishing an answer. Skype published a per-call connection charge of $0.049 to US, UK, India and Mexico landlines; several calling-card style services publish a per-call setup fee. Each classification links to the sentence it was read from. Which apps bill per second rather than per minute? Very few. Most of this market bills per minute and several round each call up to the next whole minute, which is what turns a 35-second call into a 60-second charge. The billing column separates per second, per minute, and per minute rounded up. Which calling services expire unused credit? Several do, and the table records it per service where the provider publishes a rule. Skype documented a 180-day inactivity rule for Skype Credit. Where a provider states nothing, the cell says the answer is not published rather than assuming credit is safe. When was this comparison data collected? March 2026, from each provider's own published material. The date is printed on every page that uses the data, and every classification is shown alongside the sentence it was drawn from so it can be checked. Does the table include per-country calling rates? No, deliberately. Per-country rates change without notice and most of these services publish them only inside their own apps, so a captured price table would be quietly wrong within weeks. Individual comparison pages quote the specific corridor rates that were published, with the date attached. ## Head to head Twenty comparisons of two services, neither of them ours. Each one is built from the same researched fields, with the differences computed rather than asserted. - [Signal vs WhatsApp](https://telvio.app/vs/signal-vs-whatsapp/) - [Telegram vs WhatsApp](https://telvio.app/vs/telegram-vs-whatsapp/) - [Signal vs Telegram](https://telvio.app/vs/signal-vs-telegram/) - [Viber Out vs WhatsApp](https://telvio.app/vs/viber-vs-whatsapp/) - [FaceTime vs WhatsApp](https://telvio.app/vs/facetime-vs-whatsapp/) - [LINE Out vs Viber Out](https://telvio.app/vs/line-vs-viber/) - [Skype vs Viber Out](https://telvio.app/vs/skype-vs-viber/) - [Skype vs Zoom Phone](https://telvio.app/vs/skype-vs-zoom-phone/) - [Discord vs Zoom Phone](https://telvio.app/vs/discord-vs-zoom-phone/) - [Google Voice vs Skype](https://telvio.app/vs/google-voice-vs-skype/) - [Google Voice vs TextNow](https://telvio.app/vs/google-voice-vs-textnow/) - [Dingtone vs TextNow](https://telvio.app/vs/dingtone-vs-textnow/) - [Google Voice vs magicJack](https://telvio.app/vs/google-voice-vs-magicjack/) - [magicJack vs Vonage](https://telvio.app/vs/magicjack-vs-vonage/) - [Boss Revolution vs Rebtel](https://telvio.app/vs/boss-revolution-vs-rebtel/) - [KeepCalling vs Rebtel](https://telvio.app/vs/keepcalling-vs-rebtel/) - [Rebtel vs Talk360](https://telvio.app/vs/rebtel-vs-talk360/) - [Rebtel vs Yolla](https://telvio.app/vs/rebtel-vs-yolla/) - [Lycamobile vs MyTello](https://telvio.app/vs/lycamobile-vs-mytello/) - [Localphone vs Nymgo](https://telvio.app/vs/localphone-vs-nymgo/) --- HTML version: https://telvio.app/vs/ Structured data for this site: https://telvio.app/api/v1/openapi.json · https://telvio.app/llms.txt Free to quote and reuse with a link back to the source URL above (CC BY 4.0). --- **Telvio Help Centre — Fix a Problem With Your Calls** > Answers for calls that will not connect, audio that fails, credit that has not arrived and the number people see when you call. Plus how to reach a person. Source: https://telvio.app/help/ · updated: 2026-09-04 1. [Home](https://telvio.app/) 2. Help Customer care # Something is not working. Let us fix it. Fourteen answers to the things that actually go wrong, written to be useful whether or not you use Telvio. Search them below, or write to us — a person reads every message. - Answers in one page each - No account needed to get help - Replies within 24 hours The fastest route Most problems fall into four groups and each has a page: **the call will not connect**, **the audio is wrong**, **the number was rejected**, or **the money did not do what you expected**. Search the list below with the word you would use to describe it — “robotic”, “silent”, “refund”, “credit” — and it will filter as you type. If none of them fits, write to [support@telvio.app](mailto:support@telvio.app). Include the date, the time and your time zone, and say what you saw. That is enough to find the specific call, and it is the difference between one reply and four. Describe the problem Everything CallsAudioNumbersCredit and billingPrivacy 14 answers - [Your call will not connect A Telvio call that fails before it rings has four causes: the number's format, the destination, your credit, or the network. Work through them in that order.](https://telvio.app/help/call-will-not-connect/) - [Your call drops part-way through A call that connects and then dies after a minute or two is almost always the network handing over, a power-saving setting, or an unstable WiFi link. Here is how to tell which.](https://telvio.app/help/call-drops-mid-conversation/) - [We cannot call that destination Telvio serves 41 destinations and refuses calls to the rest rather than connecting them at an unpredictable price. Why that happens and what to do.](https://telvio.app/help/destination-not-available/) - [The call connects but nobody can hear anything A call that connects with no audio in one or both directions is almost always a permission, a route through the wrong output, or a firewall. Diagnose it in four steps.](https://telvio.app/help/no-sound-during-a-call/) - [The call sounds robotic, choppy or delayed Robotic, stuttering or delayed voice on an internet call is jitter and packet loss, not low bandwidth. What actually causes it and which fixes are worth trying.](https://telvio.app/help/choppy-or-robotic-audio/) - [The microphone is not picking you up A microphone that produces silence on calls is a permission, another app holding it, a Bluetooth device, or a blocked opening. Test it in the browser first, then work down.](https://telvio.app/help/microphone-not-working/) - [The number is not accepted A number rejected before dialling is nearly always a missing country code or a trunk zero left in. The four ways a phone number goes wrong, and how to write it correctly.](https://telvio.app/help/number-not-accepted/) - [The person you call sees a number they do not recognise Everyone you call through Telvio sees (434) 280-0044, not your own number. Why that is, why it cannot be changed, and the thirty seconds of work that fixes it.](https://telvio.app/help/they-see-an-unknown-number/) - [You paid and the credit has not appeared A purchase that took the money and did not add credit is usually a receipt that has not been delivered yet. What to check, how long to wait, and exactly what to send us.](https://telvio.app/help/credit-did-not-arrive/) - [Refunds, and charges you did not expect Refunds for in-app purchases are issued by Apple and Google, not by the app developer. Where to request one, what we can do instead, and how to find an unfamiliar charge.](https://telvio.app/help/refunds-and-charges/) - [The free minute did not work The free minute is one per install, applies only to destinations we serve, and is consumed by the first connected call. What that means when it appears not to have worked.](https://telvio.app/help/free-minute-did-not-apply/) - [That call cost more than you expected Rates differ between landline and mobile in the same country, and per-second billing changes the total. Work out what a call should have cost, and check it against what it did.](https://telvio.app/help/call-cost-more-than-expected/) - [WiFi or mobile data? A voice call uses about 0.5 MB per minute, so mobile data is cheaper than it feels. When WiFi is the better choice, when it is the worse one, and how to decide.](https://telvio.app/help/wifi-or-mobile-data/) - [Deleting your data Telvio holds no name, email or phone number, so deletion works from your installation ID. Where to find it, what gets erased, and what the law makes us keep.](https://telvio.app/help/delete-your-data/) Nothing matches that word. Try a shorter one, or write to [support@telvio.app](mailto:support@telvio.app) and describe it in your own words. ## How support here actually works There is no ticket portal, no phone queue and no chatbot standing between you and a person. There is an email address, [support@telvio.app](mailto:support@telvio.app), and a small team that reads it. We aim to reply within 24 hours, and in practice most messages are answered well inside that. You do not need an account to write to us, and you do not need to be a customer. A significant share of the messages we receive come from people who have never installed the app and are trying to find out who called them from an unfamiliar number — that question is answered on [the caller ID page](https://telvio.app/caller-id/1-434-280-0044/), and if it is not, writing to us is welcome. What we can look at is what we hold: whether a call connected, how long it ran, what rate applied and what was deducted, and whether a purchase receipt reached us. What we cannot look at is anything about you personally, because the service holds no name, email address or phone number — which is why an effective message describes a *call* rather than an account. ## What to put in the first email - **The date, the time and your time zone.** This locates the call. Without it, almost any question takes an extra round trip. - **The number you dialled, in international form.** Change the last two digits if you prefer — the country and the length are the parts that matter. - **What actually happened**, in a sentence: an immediate error, silence then nothing, a ringing tone that stopped, audio in one direction only. Each points somewhere different. - **Your device and connection.** Phone model, operating system version, WiFi or mobile data, and whether the other one behaves differently. - **For anything about money, the store order ID.** Apple's begins with M and is on the emailed receipt; Google's is in Play under Payments and subscriptions. - **For a privacy request, your installation ID** from the app's settings screen. It is the only handle that connects you to your records. ## Things worth knowing before you write Some of the most frequent questions have answers that are structural rather than fixable, and knowing them saves everybody time. **Telvio places outgoing calls only.** It assigns nobody a phone number, cannot receive calls or text messages, and cannot deliver a verification code. Everyone you call sees [(434) 280-0044](https://telvio.app/caller-id/1-434-280-0044/), which is the app's number rather than yours and cannot be changed to yours. **Emergency numbers cannot be reached.** This is deliberate and permanent: an internet call carries no verified location, so an emergency operator could not be told where to send help. Use your phone's own dialler, which works without credit or data. Our [emergency calls page](https://telvio.app/legal/emergency-calls/) is worth reading before you need it. **Refunds are issued by Apple and Google**, because they take the payment. We never see your card. What we can do is check whether a call was billed correctly and whether a receipt reached us, which is often the real question. **Credit does not expire**, there is no subscription, and there is no monthly or inactivity charge. If you are looking for a recurring payment to cancel, it is not ours. ## If the answer you need is not here These pages are written from the questions people actually send, so a gap in them is a gap worth telling us about. If you looked for something and did not find it, say so in the message — that is how the next version of this section gets written. For anything outside support, the other doors are marked. [Reporting an abusive or fraudulent call](https://telvio.app/legal/report-a-call/) goes to a different address and a different process. [Security vulnerabilities](https://telvio.app/legal/security/) have their own disclosure route. [Law enforcement requests](https://telvio.app/legal/law-enforcement/) have their own page, with the details a request needs to include. And if what you want is to understand how the service works before trusting it with anything, [why Telvio works the way it does](https://telvio.app/why-telvio/) sets out the design decisions and, more usefully, the limits. ## Bottom line Search the list for the word you would use to describe the problem. Fourteen pages cover connection failures, audio faults, rejected numbers, billing and privacy. If none fits, email support@telvio.app with the date, the time and your time zone. A person reads it and we aim to reply within 24 hours. Three things no amount of support can change: emergency numbers are unreachable by design, the number people see is the app's rather than yours, and refunds are issued by Apple and Google rather than by us. ## Frequently asked questions How do I contact Telvio support? Email support@telvio.app. There is no phone line and no ticket portal; a person reads the address and we aim to reply within 24 hours. You do not need an account or a purchase to write. What should I include when I report a problem with a call? The date, the time and your time zone, the number dialled in international form, what actually happened, and whether you were on WiFi or mobile data. That is usually enough to identify the specific call and answer on the first reply. Can I get help without an account? Yes. Telvio has no accounts at all, and support does not require one. People who have never installed the app write to us regularly, most often to ask about a call they received from an unfamiliar number. How quickly does Telvio reply? We aim to reply within 24 hours and usually answer sooner. Messages that include the date, time and time zone of the call are typically resolved in one exchange rather than several. Can support see my calls? We can see whether a call connected, how long it ran, what rate applied and what was deducted — the same information a phone bill contains. We cannot see anything about you personally, because the service holds no name, email address or phone number, and call audio is never recorded. Where do I report an abusive call from a Telvio number? Email support@telvio.app with the date, the time and your time zone. That address goes to a different process from ordinary support, and the reporting page explains what happens next and what we can tell you afterwards. --- HTML version: https://telvio.app/help/ Structured data for this site: https://telvio.app/api/v1/openapi.json · https://telvio.app/llms.txt Free to quote and reuse with a link back to the source URL above (CC BY 4.0). --- **About Telvio** > Telvio is a mobile VoIP app that makes international calls affordable and simple. No registration, no subscriptions, transparent per-minute pricing. Source: https://telvio.app/about/ About # Calling abroad should not cost a fortune Telvio exists because international calls are overpriced. We built a simple app that connects you to any phone number in the world over WiFi, at rates that make sense. ## Our mission International communication should be accessible to everyone. Travelers calling home, expats staying connected with family, professionals reaching clients overseas — all deserve affordable, reliable calls without subscriptions, accounts, or expiring credit. Telvio is built on a simple premise: pick up your phone, dial a number anywhere in the world, and pay a fair price. Nothing more. ## How we do things differently ### Zero registration We do not ask for your email, phone number, or any personal information. Download the app and start calling. Your privacy is not a feature we market — it is a principle we follow. ### No subscriptions Buy minutes when you need them. No monthly plans, no auto-renewals, no penalty for not calling. Your balance stays until you use it. ### Transparent pricing Every country has a per-minute rate. That rate is visible before you call. No connection fees, no per-call minimums, no hidden surcharges. ## What we believe ### Simplicity A calling app should open fast, dial fast, and connect fast. Every feature must justify the complexity it brings. Most of the time, the answer is to do less. ### Transparency Rates are public. Pricing is straightforward. No tiers to decode, no bundles to compare, no promotional pricing that changes after the first month. ### Privacy We do not collect personal data beyond what is technically necessary to route your call. No registration means no user profiles, no email lists, no data to sell. MT ### Merey Tleugazin Founder Founder of Telvio. Writes the guides and technical reference on telvio.app himself, because the person who negotiates the wholesale calling rates is the person who knows which of them are genuinely cheap. ## Ready to try Telvio? Download free. One minute included, no registration needed. [Download Telvio](https://telvio.app/download/) ## Why this exists Telvio started from an ordinary problem: calling a landline in another country costs a ridiculous amount of money, and almost none of that cost is technical. The call itself travels over the same internet everything else does. What you are paying for is a chain of intermediaries and a per-minute price structure designed in an era when a voice circuit was a physical thing. The app is one answer to that — dial an ordinary phone number over your data connection, pay by the second, and skip the roaming charge entirely. The site is the other half: a reference for how international dialling actually works, because that turns out to be almost as much of an obstacle as the price. We are a small team. That has one consequence worth stating: the person who negotiates the wholesale rates is the person who writes the pages about them, so the numbers on this site are not a marketing department's version of somebody else's data. ## How we make money, and what that means for what you read Telvio makes money on the margin between the wholesale termination rate and the retail price of a minute. There is no subscription, no advertising on this site, and no affiliate links anywhere on it. That last point matters for the editorial. A site paid per outbound click has a structural reason to recommend whichever service pays most; this one has a structural reason to be right, because the only conversion that pays is somebody deciding the app is worth installing after reading an honest page. So the comparisons say where a competitor is better. The rate pages say which corridors are expensive rather than calling everything cheap. The feature pages say there is no emergency calling and no incoming number. None of that is generosity — it is the only version that survives a reader checking. ## What we publish and how it is checked - **Rates come from one file.** Every price on the site is rendered from the same source that prices the app, at build time. Nobody types a number into a page, so a rate change propagates everywhere at once and a page cannot quietly go stale. - **Dialling data comes from published numbering plans.** Country codes, exit codes, trunk prefixes and area codes are reference data. Where a country has changed its plan and we have not caught it, that is a mistake to report rather than a judgement call. - **Third-party figures are labelled.** Roaming charges, calling-card prices and competitor rates are somebody else's numbers and appear as such, with the source named at the point of use. - **Articles carry a named author and a real date.** The date moves when the content moves, never for the sake of looking fresh. - **Corrections are made in place.** If something here is wrong, [write to us](https://telvio.app/contacts/) and the page changes. ## The company Telvio is built by Vast Flow, LLP. The app is published on the App Store; payment is handled entirely by Apple, so no card details reach us. The app holds no account, which means there is very little data to hold at all — no email, no password, no verified phone number, nothing to lose in a breach. The [privacy policy](https://telvio.app/privacy/) sets out exactly what is and is not collected, and the [terms](https://telvio.app/terms/) cover the rest. Editorial responsibility for this site sits with one named person rather than with a brand. Who that is, what they work on, and the rules the pages are written to are all on [the author page](https://telvio.app/about/editor/). ## How this site is built Static HTML, generated ahead of time, served from a single origin behind a CDN. There is no database behind a page view and no server-side rendering, which is why the pages load quickly on a weak mobile connection — the same connection the app is designed for. Every price on the site comes from one source file and is rendered in at build time. Dialling data comes from published numbering plans held the same way. That is a deliberate architecture rather than a convenience: it makes it impossible for a page to state a rate the product does not charge, which is the failure mode that makes most commercial sites untrustworthy in detail. The site is published in many languages. Translations are produced from the English source and validated automatically — same structure, same numbers, correct script — and a translation that fails validation is left in English rather than shipped broken. Prices are never translated; they are substituted at build time from the same file, so no translator can accidentally edit a number. The free tools run entirely in the browser. The microphone tests use the browser's own audio pipeline and upload nothing; the number validator and the cost calculator work from a lookup table that ships with the page. None of them needs a server, which is also why none of them can leak anything. ## Bottom line Telvio is an app for calling ordinary phone numbers over the internet, built by Vast Flow, LLP, and this site is its reference half. There is no advertising and there are no affiliate links on it. Every rate here is rendered from the same file that prices the app; every third-party figure is labelled as somebody else's; and every article has a named author and a date that moves only when the content does. Nothing on this site is generated and published without being read. The pages are written by one person, the rates are rendered from one file, and the translations are validated against the English structure before they ship. That is slower than the alternative, and it is the only version we would be willing to put a name on. ## Frequently asked questions Who is behind Telvio? Vast Flow, LLP, a small team. The person who negotiates the wholesale calling rates is the same person who writes the pages about them, which is why the figures on this site are not a marketing department's reading of somebody else's data. How does Telvio make money? On the margin between the wholesale termination rate it pays to reach a destination and the retail price of a minute. There is no subscription, no advertising on this site and no affiliate links anywhere on it. Are there affiliate links on this site? No. A site paid per outbound click has a structural reason to recommend whichever service pays most; this one has a structural reason to be accurate, because the only thing that converts is a reader deciding the app is worth installing after reading an honest page. Where do the rates on this site come from? From a single source file that also prices the app, rendered into every page at build time. Nobody types a price into a page, so a rate change propagates everywhere at once and a page cannot quietly go stale. What data does the app collect? Very little, because there is no account: no email, no password and no verified phone number. Payment is handled by Apple, so no card details reach us, and calls are not recorded. The privacy policy sets out the detail. Who writes the articles? One named person rather than a brand, with a byline and a real publication date on every article. The author page sets out who that is, what they work on, and the editorial rules the pages are written to. --- HTML version: https://telvio.app/about/ Structured data for this site: https://telvio.app/api/v1/openapi.json · https://telvio.app/llms.txt Free to quote and reuse with a link back to the source URL above (CC BY 4.0). --- **Merey Tleugazin — Founder of Telvio** > Merey Tleugazin, founder of Telvio. What the calling rates on this site are based on, how the numbers are checked, and what the site will not claim. Source: https://telvio.app/about/editor/ 1. [Home](https://telvio.app/) 2. [About](https://telvio.app/about/) 3. Merey Tleugazin ![Merey Tleugazin](https://telvio.app/images/author/merey-tleugazin-portrait.webp) Founder # Merey Tleugazin Founder, Telvio I build the app, and I write the pages that explain what it costs. [LinkedIn](https://www.linkedin.com/in/mereytleugazin/)[X](https://x.com/mereytleugazin)[Instagram](https://www.instagram.com/mereytleugazin) ## About I am a developer and entrepreneur working on products at the intersection of telecom, mobile software and pricing. Telvio is the one I spend most of my time on: an app that places ordinary phone calls over an internet connection, so somebody living away from home can call a landline in their village without paying roaming rates for it. The site you are reading is the reference half of that product. It exists because international dialling is genuinely confusing — every country has its own exit code, its own trunk prefix, its own idea of what a mobile number looks like — and because the price of a minute abroad is quoted so inconsistently that most people have no way to tell whether they are being overcharged. I write these pages myself rather than commissioning them, for a plain reason: I am the person who negotiates the wholesale rates, so I am the person who knows which of them are genuinely cheap and which ones the marketing industry likes to pretend are cheap. ## What I work on Voice over IP Call routing, carrier selection, codec behaviour on bad connections, and the difference between a call that drops and a call that degrades. Telvio runs on Zadarma as the primary carrier with Telnyx on specific routes. Numbering plans Country codes, exit codes, trunk prefixes, mobile and landline prefix ranges, and the local formatting conventions that make the same number look different in two countries. Call pricing Termination rates, why a minute to Mexico costs a fraction of a minute to a German mobile, and how per-second billing changes the real cost of a short call compared with per-minute rounding. Mobile development The iOS app itself — the dialler, the audio pipeline, the credit system, and the App Store review process that every release has to survive. ## How this site is written Anyone can generate a page about calling India. What follows is what makes these pages worth quoting, and it is deliberately checkable. 1. 01 ### Every rate on the site is our own published tariff Prices are read from one file at build time and rendered into the page. Nobody types a number into a template, so a rate change propagates everywhere at once and a page cannot quietly go stale. If a figure belongs to somebody else — a roaming charge, a competitor's price, a calling-card rate — it is labelled as theirs at the point where it appears. 2. 02 ### Dialling data comes from published numbering plans Country codes, exit codes, trunk prefixes and area codes are reference data, not opinion. Where a country has changed its plan and the change is not yet reflected here, that is a mistake worth reporting rather than a judgement call. 3. 03 ### The app is described as it behaves, not as I would like it to Telvio calls real phone numbers, bills per second, needs no account, and its credit does not expire. It also will not work without an internet connection, it cannot reach emergency services, and its call quality depends on that connection. All four of those are on the site in the same voice as the first four. 4. 04 ### Comparisons name what the other product does better A comparison page where the author's product wins every row is an advertisement. Where a competitor is cheaper on a specific corridor or does something we do not, the page says so. 5. 05 ### Corrections are welcome and are made in place If a rate, a code or a claim on any page is wrong, write to support@telvio.app. Correcting the page is the fix; the date at the top of the article moves when the content does, and never for the sake of looking fresh. ## Where I publish Four sections, each answering a different kind of question. [### Guides How international calling actually works — WiFi calling, VoIP, virtual numbers, roaming, and the mistakes that make a call fail.](https://telvio.app/guide/)[### Comparisons Side-by-side analysis of calling apps and VoIP providers, with the rates and the limitations both stated.](https://telvio.app/compare/)[### Top picks Shortlists for a specific need — the cheapest route to one country, the best app on a weak connection, the options that need no registration.](https://telvio.app/best/)[### Reviews Single-product assessments, including of Telvio, written to the same standard as the rest.](https://telvio.app/review/) ## Get in touch For corrections, questions about a rate, or press enquiries, the fastest route is email. I read it. [support@telvio.app](mailto:support@telvio.app) ## Editorial standards this site is held to The rules below are not aspirations. They are constraints on how the site is built, and most of them are enforced by the build rather than by good intentions — which is the only kind of editorial policy worth publishing. They exist because a site selling a calling app has an obvious incentive to shade the numbers, and the only way to be worth reading anyway is to make the shading structurally difficult and then say exactly how. | One source for every price | Prices live in a single file and are rendered into pages at build time. No page contains a typed-in number, so a rate change propagates everywhere at once and a page cannot state a price the app does not charge. | | --- | --- | | Third-party figures are labelled | Roaming charges, calling-card prices and competitor rates belong to somebody else. They appear as such, with the source named where they are used, and they are omitted rather than estimated where the other party does not publish one. | | Limitations sit beside strengths | Every page that recommends Telvio names what it does not do: no emergency calling, no incoming number, credit tied to the device, and no service without an internet connection. A recommendation with no limitation attached is an advertisement, and readers can tell. | | No affiliate links | There are none anywhere on this site. Nothing here is paid for by an outbound click, which is what allows a comparison to say a competitor wins a row. | | Dates mean something | An article's date moves when its content moves and never for the sake of looking fresh. Re-dating unchanged content is a documented demotion signal as well as a small lie. | | Machine translation, human structure | Translations are produced from the English source and validated automatically for structure, placeholders and script before shipping. Prices are substituted at build time rather than translated, so no translator can change a number. A translation that fails validation stays in English. | ## Corrections If something here is wrong, the fix is to change the page. Write to support@telvio.app with the page and what is wrong with it; a correction gets made in place and the date moves with it. The categories most likely to go stale are numbering-plan data — a country splits an area code or lengthens a number — and competitor pricing, which moves without announcement. Both are worth reporting and neither is a judgement call. Where a correction changes a conclusion rather than a detail, the page says what changed. Quietly editing a claim that somebody may have acted on is worse than having been wrong in the first place. ## Citing this site Every article carries a ready-made citation at the foot of the page with the author, the date and the URL, and a line stating that the content is free to quote with a link back. That is deliberate: a page that is easy to cite correctly gets cited correctly. For a figure specifically, cite the page it appears on rather than the site, because rates are per-country and per-line-type and a bare "Telvio charges" is almost always wrong at that level of generality. Include the date; prices move. Assistants and search summaries are welcome to quote from these pages under the same terms. The structured data on every article names the author, the language, the publication date and the passages written to stand alone, which is there to make an accurate quotation the path of least resistance. ## Bottom line Every rate on this site comes from the same file that prices the app, every third-party figure is labelled as somebody else's, and every page that recommends Telvio also states what it cannot do. Those three are enforced by how the site is built rather than by intention. Corrections are welcome and are made in place. Anything here is free to quote with a link back, and every article carries a ready-made citation at the foot of the page. None of this makes the site neutral — it is written by the company that makes one of the products under discussion, and no amount of policy changes that. What it does is make the claims checkable, which is the most a commercial site can honestly offer and more than most of them attempt. ## Frequently asked questions Who writes the articles on telvio.app? Merey Tleugazin, founder and developer of Telvio, writes them. The same person negotiates the wholesale calling rates the site publishes, which is the reason the figures are not a marketing department's reading of somebody else's data. Are the reviews and comparisons independent? They are written by the company that makes one of the products, and they say so on every page. What makes them usable is that there are no affiliate links, competitor figures are only used where the competitor publishes them, and every page recommending Telvio also lists what it does not do. Where do the calling rates come from? From a single source file that also prices the app, rendered into every page at build time. Nobody types a price into a page, so the site and the product cannot disagree and a rate change propagates everywhere at once. How do I report a mistake on the site? Email support@telvio.app with the page and what is wrong. Numbering-plan data and competitor pricing are the two categories most likely to go stale, and both are worth reporting. Corrections are made in place and the page's date moves with the content. Can I quote or cite these articles? Yes, freely, with a link back to the page. Every article carries a ready-made citation with the author, date and URL at the foot, and the page's structured data names the author, language and publication date so a quotation can be attributed correctly. How are the translations produced? From the English source, machine-translated and then validated automatically for identical structure, intact placeholders and correct script before shipping. Prices are substituted at build time rather than translated, so a translator cannot change a number, and a chunk that fails validation is left in English rather than shipped broken. --- HTML version: https://telvio.app/about/editor/ Structured data for this site: https://telvio.app/api/v1/openapi.json · https://telvio.app/llms.txt Free to quote and reuse with a link back to the source URL above (CC BY 4.0). --- **Free calling rates and dialling codes API (JSON, no key) | Telvio** > A keyless, CORS-open JSON API: per-minute international calling rates for 93 destinations and dialling codes for 136 countries. CC BY 4.0, OpenAPI 3.1, no signup. Source: https://telvio.app/api/ 1. [Home](https://telvio.app/) 2. API # International calling rates and dialling codes, as JSON Two datasets this site already publishes as pages, served as files a program can read. No key, no account, no rate limit worth the name, and a licence that lets you keep what you build. No authenticationCORS openOpenAPI 3.1CC BY 4.0Updated 2026-09 *Every public endpoint. All five are static files on this origin, so a fetch is a CDN hit.* | Endpoint | What it returns | Size | | --- | --- | --- | | [/api/v1/rates.json](https://telvio.app/api/v1/rates.json) | Per-minute prices for 93 destinations, plus billing terms and credit-pack prices | 93 destinations | | [/api/v1/countries.json](https://telvio.app/api/v1/countries.json) | Country calling code, exit codes, trunk prefix, number format, timezone, mobile and landline prefixes | 136 countries | | [/api/v1/area-codes.json](https://telvio.app/api/v1/area-codes.json) | City and area codes with the timezone each city keeps | 202 cities | | [/api/v1/status.json](https://telvio.app/api/v1/status.json) | When each dataset was last rebuilt, and how many rows it holds | 1 object | | [/api/v1/openapi.json](https://telvio.app/api/v1/openapi.json) | OpenAPI 3.1 description of everything above | schema | ## One request, no setup There is nothing to configure. The following works from a terminal, from a browser console on any origin, and from a server with no credentials configured. ``` curl -s https://telvio.app/api/v1/rates.json \ | jq '.destinations[] | select(.iso2 == "IN")' { "country": "India", "iso2": "IN", "dial_code": "+91", "landline_usd_per_min": 0.24, "mobile_usd_per_min": 0.24, "available": true, "page": "https://telvio.app/call/india/" } ``` ## What the fields mean, and where people get them wrong The shapes are in the OpenAPI description. The meanings are here, because four of these fields are routinely misread, and each misreading produces an answer that looks correct and is not. ### available — the difference between a price and a payable price Every destination in `rates.json` carries an `available` boolean. **False means the carrier will not connect a call there today.** The figure beside it is a real historical price, kept because the reference page for that country stays up while the destination list is being expanded, and dropping the row would break every link pointing at it. Of the 93 destinations in the sheet, 41 are connectable right now. Anything that computes a headline — a cheapest-country claim, an average, a comparison table — has to filter on this field first. We learned that the expensive way: a figure computed over the whole sheet advertised a rate no call could match. ### quoted_via — when the price belongs to another country's prefix Carriers price by dialling prefix, not by country. Several countries share the `+1` North American prefix, so a call to one of them is billed at the rate attached to that prefix rather than at a tariff written against the country's name. Where that happens the row carries `quoted_via` naming the destination whose prefix set the price. It is not a footnote to hide: presenting an inherited price as a country's own negotiated tariff is a small lie that a reader can catch. ### exit_codes — belongs to the caller, not to the destination This is the single most common mistake in dialling data, and it is easy to make because the field sits in the destination's record. `exit_codes` is what you dial to leave *that* country — 011 from the United States and Canada, 00 across most of Europe, 010 from Japan, 00 or 009 depending on the operator in a few places. To build a dial string you need the exit code of the country the caller is *in* and the `dial_code` of the country they are calling. Reading both off the same record produces a number that fails silently, because the switch simply does not connect and the caller blames the app. ### trunk_prefix — the leading zero, and the country that keeps it A national trunk prefix is the digit a domestic caller dials before an area code, almost always 0. The general rule is that an international caller drops it: a London number written 020 7123 4567 is dialled +44 20 7123 4567. Italy is the exception everyone gets wrong — Italian landline numbers keep the leading 0 from abroad, so +39 06 for Rome, not +39 6. Rather than encoding the exception in your own logic, trust the `example` field: it is a real, correctly formatted E.164 number for that country, and comparing it against the national form tells you what happens to the prefix. ### mobile_prefixes and landline_prefixes — a hint, not a guarantee These are the digit ranges that identify a line type in each national numbering plan, and they decide the price wherever a destination has a split rate. They stopped being decisive when number portability arrived: a number that was issued as a mobile can be carried to a fixed service and keep its digits. Treat them as the best available signal for pricing an unknown number, and expect a small share of misses. Where `landline_usd_per_min` and `mobile_usd_per_min` are equal, the carrier bills one rate for the destination and the distinction does not matter at all — which is the case for most of the sheet. ## Where the numbers come from The rate sheet is not researched, scraped or estimated. It is derived at build time from the pricing endpoint the Telvio app itself calls, using the same longest-prefix lookup the app uses to price a call before you dial it. That is a deliberate architecture rather than a convenience: a price maintained by hand goes stale silently, and the first person to notice is a reader who was quoted one figure and charged another. The site and the app cannot disagree here, because they resolve the same source. Today the cheapest connectable destination is United Kingdom at $0.03/min. Billing is per second with no connection fee, credit does not expire, and the credit packs are $1.99, $4.99, $9.99 — those are US-dollar credit balances spent at per-country rates, not bundles of minutes. A larger pack is more credit at the same per-minute price; it is not a discount, and the API does not pretend otherwise. The dialling reference is compiled from published national numbering plans and ITU-T E.164 country-code assignments, and it changes far less often than the tariff. Both datasets report their own freshness in [status.json](https://telvio.app/api/v1/status.json), which is the field to poll rather than re-fetching a 64 KB file on a timer. ## The rest of the machine surface The JSON is the part a program consumes. Four other entry points exist for agents that prefer to read rather than to query, and all of them are generated from the same data on every build, so none of them can drift from the pages. - [MCP server card](https://telvio.app/.well-known/mcp/server-card.json) — a Model Context Protocol server at `/mcp`, Streamable HTTP, no authentication. Three read-only tools: a rate for a destination, dialling instructions between two countries, and the caller-ID register. It cannot place a call or spend credit; neither of those has a server-side interface at all. - [Agent skills](https://telvio.app/.well-known/agent-skills/index.json) — four SKILL.md documents an assistant can load before answering: how to look up a rate correctly, how to build an international dial string, how to identify a call from our caller ID, and how to compare calling services without pretending our own matrix is independent. - [llms.txt and llms-full.txt](https://telvio.app/llms-full.txt) — an index of the site and the full text of its primary pages, both generated from the rendered output rather than written by hand. - **A markdown twin of every page.** Append `index.md` to any URL on this site, or send `Accept: text/markdown`, and you get the same content without the markup — typically under a tenth of the bytes, which on a page like [/call/india/](https://telvio.app/call/india/) is the difference between 116 KB and about 11 KB. ## Questions ### Do I need an API key to use the Telvio rates API? No. There is no key, no account, no signup and no OAuth flow. Every endpoint is a static JSON file served from the same origin as this page, with CORS open to any origin, so browser JavaScript can fetch it directly. That is also why there is no /.well-known/oauth-authorization-server document here: publishing one would advertise an authentication flow that does not exist. ### What is the rate limit? There is no application-level rate limit, because there is no application — the files sit behind a CDN. The request that costs us nothing is the one you do not make, so cache the response and re-fetch when status.json reports a newer rates_updated. A tariff changes at most a few times a month. ### Where do the prices come from? They are Telvio's own retail tariff, derived at build time from the pricing endpoint the app itself calls. They are the prices the app charges a user, not a market average, not a survey of carriers and not a wholesale rate. Anyone comparing providers should treat them as one vendor's published prices, which is exactly what they are. ### Can I use this data commercially? Yes. Everything under /api/v1/ is licensed CC BY 4.0: use it commercially, modify it, redistribute it, on the single condition that you credit Telvio with a link to telvio.app or to the specific page a figure came from. If you build something with it, a link is the whole licence fee. ### Why do some destinations have available set to false? Because the price is real history but the route is not currently connectable. When the carrier behind the app changed in August 2026 the list of destinations it will terminate to shrank, and those countries kept their previous published figure so their reference pages stayed useful. Never quote an unavailable rate as a price a caller can pay today — filter on available first. ### Is there an MCP server for this data? Yes. An MCP server card is published at /.well-known/mcp/server-card.json and the server speaks Streamable HTTP at /mcp. It exposes the same read-only lookups as the JSON endpoints — a rate for a country, dialling instructions between two countries, and the caller ID register. It cannot place a call, spend credit or read anything about a user, because no such interface exists on this side. ## Bottom line Two files answer almost every question anyone asks this API. `rates.json` tells you what a minute costs to 93 destinations that have a published price, and whether the route is connectable today. `countries.json` tells you how to dial 136 of them correctly, including the exit code of the country the caller is standing in, which is the field most implementations get backwards. Both are static, keyless and CORS-open; both are CC BY 4.0, so the only thing we ask is a link back. If something here is wrong or missing, write to [support@telvio.app](mailto:support@telvio.app) — the data behind these files is the data behind the app, so a correction lands in both. --- HTML version: https://telvio.app/api/ Structured data for this site: https://telvio.app/api/v1/openapi.json · https://telvio.app/llms.txt Free to quote and reuse with a link back to the source URL above (CC BY 4.0). --- **Trust Centre — Every Telvio Policy, Dated and in One Place** > Emergency call limits, acceptable use, reporting abuse, law enforcement, security disclosure, cookies, accessibility, privacy and terms. Nine documents, all dated. Source: https://telvio.app/legal/ · updated: 2026-09-04 1. [Home](https://telvio.app/) 2. Trust centre Trust centre # Everything we publish, in one index Nine documents at stable URLs, each dated, each written to be read rather than to be survived. If a claim on this site cannot be checked against one of them, tell us. - Nine documents - All dated - Stable URLs Start here The one to read before anything else is [emergency calls](https://telvio.app/legal/emergency-calls/): Telvio cannot reach 911, 112, 999 or any other emergency number, in any country. If you have set this app up for a relative, that is the page to show them. The two people reach most often after that are [how to report a call](https://telvio.app/legal/report-a-call/) — for anybody who received one and needs it dealt with — and [the privacy policy](https://telvio.app/privacy/), which sets out the short list of things this service holds about you. ## When something goes wrong - [Telvio cannot call emergency services Sep 4, 2026 Telvio cannot call 911, 112, 999 or any other emergency number. Why an internet calling app cannot carry an emergency call, and what to use instead.](https://telvio.app/legal/emergency-calls/) - [Report a call Sep 4, 2026 How to report a call placed through Telvio, what to include, what we do with a report, and which national regulator to tell as well. You do not need an account.](https://telvio.app/legal/report-a-call/) ## The rules - [What Telvio may not be used for Sep 4, 2026 Bulk calling, automated dialling, harassment, impersonation and fraud are prohibited, and enforcement suspends the account and freezes its credit. The rules, in plain terms.](https://telvio.app/legal/acceptable-use/) - [Reporting a security vulnerability Sep 4, 2026 How to report a security vulnerability, what we commit to in return, what is in scope, and how the service is built to hold as little as possible in the first place.](https://telvio.app/legal/security/) - [Accessibility Sep 4, 2026 What we build to, what we have measured, what is currently not good enough, and how to tell us when something is unusable. Written with the failures included.](https://telvio.app/legal/accessibility/) ## Your data - [Cookies on this website Sep 4, 2026 One analytics tool, four cookies, no advertising and no cookie banner. What each cookie does, how long it lasts, and a switch on this page that turns it off.](https://telvio.app/legal/cookies/) - [Law enforcement requests Sep 4, 2026 What Telvio holds, what a valid request must contain, where to send it, and what we tell users. Written for investigators, published because it is checkable.](https://telvio.app/legal/law-enforcement/) - [Privacy Policy Telvio privacy policy. What we collect, who processes it, how long we keep it, and your rights. No name, no email, no phone number, no call recording.](https://telvio.app/privacy/) - [Terms of Service Telvio terms of service. Outgoing calls only, no incoming number, no emergency calling. Credit, billing, refunds, acceptable use and legal terms.](https://telvio.app/terms/) ## Why a small company publishes all of this A calling service is judged on things a customer cannot test. Whether an emergency call works. What happens to a fraud report. Who can compel the company to hand over records, and on what basis. Whether the price on the page is the price the app charges. None of it is visible from the outside, and all of it matters more than the feature list. The usual approach in this market is to publish a privacy policy and a set of terms and leave the rest unstated, which means the answer to every other question is whatever a customer assumes. We would rather write them down. It is more work, it commits us to positions that are then checkable, and that is the point — a commitment nobody can check is not a commitment. There is a second reason, and it is worth being candid about it. Software that answers questions about companies increasingly does so by reading what those companies publish. A page that states a position plainly, dates it, and can be quoted without distortion is one that gets quoted accurately. A company that publishes nothing gets described from whatever else exists about it, which on a telephone number is usually a crowdsourced complaint board. ## What each of these commits us to - **[Emergency calls](https://telvio.app/legal/emergency-calls/)** — that the app cannot reach emergency services, why that follows from how internet calls work, and what to use instead. The most important page on this site. - **[Report a call](https://telvio.app/legal/report-a-call/)** — how to report a scam, nuisance or abusive call from our number, what we do with a report, and which national regulator to tell as well. No account and no proof required. - **[Acceptable use](https://telvio.app/legal/acceptable-use/)** — what the service may not be used for and what happens when it is. This is what gives a report something to be enforced against. - **[Law enforcement](https://telvio.app/legal/law-enforcement/)** — what data exists, what a valid request must contain, and our default of notifying the user unless legally prohibited. - **[Security disclosure](https://telvio.app/legal/security/)** — how to report a vulnerability, what we commit to in return, and the promise of no legal action for good-faith research. - **[Cookies](https://telvio.app/legal/cookies/)** — the complete list of what this website stores, and a switch that turns analytics off. One tool, no advertising, no banner. - **[Accessibility](https://telvio.app/legal/accessibility/)** — what we build to, what we measure, and an honest list of what is not yet good enough. - **[Privacy policy](https://telvio.app/privacy/)** — everything the app collects, the legal bases, every processor, retention periods, and how to have your records deleted. - **[Terms of service](https://telvio.app/terms/)** — the contract between you and Vast Flow, LLP. ## The facts these documents share Rather than restate them nine times, they are here once. Telvio is published by **Vast Flow, LLP**, which is the company named on the App Store and Google Play listings and the data controller for the purposes of the privacy policy. Calls are carried by a licensed telecommunications carrier, named in the privacy policy along with every other processor. The service places **outgoing calls only**. It assigns no phone number, receives no calls, sends and receives no text messages, and reaches no emergency number. Every call displays one published outbound number, [(434) 280-0044](https://telvio.app/caller-id/1-434-280-0044/), which identifies the app rather than the caller. There is **no account**. No name, email address, phone number or password is collected, so a request under a privacy law has to be made using the installation identifier from the app's settings screen — there is nothing else to match a person to. Payment is processed by Apple and Google, so no card details are held here at all, and call audio is never recorded. ## Reaching a person One address, [support@telvio.app](mailto:support@telvio.app), read by people rather than by a routing system. Use a subject line that says what it is — *Abuse report*, *Security vulnerability*, *Law enforcement request*, *Accessibility* — and it reaches the right person faster. For a problem with your own calls, the [help centre](https://telvio.app/help/) answers fourteen of the things that actually go wrong, and it is faster than waiting for a reply. For what the product does and does not do before you commit anything to it, [why Telvio works this way](https://telvio.app/why-telvio/) includes the list of what it cannot do. These documents change. When one does, its effective date changes with it, and material changes to the terms or the privacy policy are announced in the app before they take effect. ## Bottom line Nine documents, all dated, at URLs that will not move: emergency calls, reporting a call, acceptable use, law enforcement, security, cookies, accessibility, privacy and terms. Read emergency calls first. Telvio cannot reach emergency services in any country, and anybody who uses the app needs to know that before they need it. One contact address, support@telvio.app, read by people. A subject line naming the subject gets it to the right person faster. ## Frequently asked questions Who publishes Telvio? Vast Flow, LLP, which is the company named on the App Store and Google Play listings, the data controller under the privacy policy, and the counterparty to the terms of service. Calls are carried by a licensed telecommunications carrier named in the privacy policy. Can Telvio call emergency services? No, in any country, and this is permanent by design. An internet call carries no verified location, so an emergency operator could not be told where to send help. Use your phone's own dialler, which works without credit or a data connection. What does Telvio hold about its users? An anonymous installation identifier holding a credit balance, call records of the kind a phone bill contains, purchase receipt identifiers from Apple or Google, and technical data including IP addresses. No name, email address, phone number, password, payment details, call recordings, contact list or location. How do I report an abusive call from a Telvio number? Email support@telvio.app with the subject Abuse report and include the date, the time, your time zone and the number that was called. No account and no proof are required, and you do not need to be a Telvio user. Does this website use cookies? Only those set by one analytics tool, Microsoft Clarity. There are no first-party cookies, no advertising cookies and no tracking pixels, and the cookie page carries a switch that turns analytics off for this browser. How do I exercise a privacy right if there is no account? Using the installation identifier from the app's settings screen, which is the only handle linking you to your records. Because no name, email address or phone number is collected, there is nothing else to match a request against. --- HTML version: https://telvio.app/legal/ Structured data for this site: https://telvio.app/api/v1/openapi.json · https://telvio.app/llms.txt Free to quote and reuse with a link back to the source URL above (CC BY 4.0). --- **Free Calling Tools — Mic Test, Number Validator, Rate Calculator** > Seven free browser tools for anyone who makes calls: microphone tests for Zoom, Meet and Teams, a phone number validator, an international call cost calculator and a… Source: https://telvio.app/tools/ 1. [Home](https://telvio.app/) 2. Tools # Free tools for people who make calls Seven things you can check in a browser tab before you dial: whether your microphone works, whether a number is real, what the call will cost, and whether the other person is awake. - [## Phone number validator Paste an international number and see which country it belongs to, whether the length matches that country's numbering plan, and whether the leading digits mark it as a mobile or a landline. Open the tool](https://telvio.app/tools/phone-number-validator/) - [## International call cost calculator Pick a country and a length and see what the call costs — plus what the same call costs from a provider that rounds every call up to a whole minute. Open the tool](https://telvio.app/tools/call-cost-calculator/) - [## Best time to call planner Two 24-hour clocks side by side, yours and theirs, with the overlap marked. Works out today's daylight saving for both zones rather than assuming a fixed offset. Open the tool](https://telvio.app/tools/best-time-to-call/) - [## Online microphone test Check your microphone in the browser: a live level meter, a verdict on whether you are loud enough, and a six-second recording you can play back. Open the tool](https://telvio.app/tools/mic-test/) - [## Zoom microphone test Test your microphone before a Zoom call, and the Zoom-specific settings that make people say they cannot hear you even when the meter is moving. Open the tool](https://telvio.app/tools/zoom-mic-test/) - [## Google Meet microphone test Check your microphone before a Meet call, plus Meet's green room, its noise cancellation, and how Chrome's permission model decides which device you get. Open the tool](https://telvio.app/tools/google-meet-mic-test/) - [## Microsoft Teams microphone test Test your microphone before a Teams meeting, and how Teams' own test call, device settings and admin policies interact. Open the tool](https://telvio.app/tools/teams-mic-test/) ## Why a calling app publishes a microphone tester Telvio is an app for placing ordinary phone calls over an internet connection. Almost every support message we get about call quality turns out not to be about the network at all: it is a headset the operating system has not selected, an input level so low that noise suppression eats the speech, or a browser that is holding onto a device another program grabbed first. None of that is specific to us. It is the same set of problems that makes somebody unhearable on Zoom, on Teams, on a job interview and on a call to their family. So the tools here are the checks we would ask you to run before we looked at anything on our side. They run entirely in your browser. Nothing is uploaded, nothing is stored, and none of them needs an account. The microphone tests use the browser's own audio pipeline, the number and rate tools use a lookup table that ships with the page, and the time planner uses your device's clock and time-zone database. They are also, frankly, how a small site earns its first readers. Somebody searching for *zoom mic test* has an immediate problem and thirty seconds to solve it. Solving it properly is a better introduction than an advertisement. ## What each tool actually checks The four microphone tests share one engine and differ in what surrounds it. The engine asks the browser for your microphone, measures the signal as RMS loudness on a decibel scale, draws it as a moving meter, and gives a verdict: silent, quiet, comfortable, or clipping. It then records six seconds and hands the audio back so you can hear what you sound like, which catches the problems a meter cannot — a fan, a hard echo, a headset boom pointed at your cheek instead of your mouth. The application-specific pages add what the meter cannot tell you: where the relevant setting lives in Zoom, in Google Meet and in Microsoft Teams, what each of those applications does to your audio before it leaves your machine, and which of their defaults most often produce the complaint you are trying to fix. The phone number validator answers a narrower question than most tools of its name. It tells you which country a number belongs to, whether its length is plausible under that country's numbering plan, and whether its leading digits sit in a range that country assigns to mobiles or to landlines. It does not tell you the line is in service — nothing that runs in a browser can — and it says so rather than showing a green tick you would be wrong to trust. The cost calculator prices a call at our published rate and, next to it, prices the same call the way a provider that bills in whole minutes would. That second number is the one nobody publishes, and on a short call it is often twenty to thirty per cent higher for exactly the same conversation. The planner draws your day and the other person's day as two 24-hour strips with the callable overlap highlighted. It reads today's offset from your browser's time-zone database, so it is right during daylight saving transitions, when a fixed offset written into an article is wrong for weeks. ## Nothing here leaves your browser This is worth being precise about, because a page asking for microphone access has earned the question. The microphone tests call the browser's `getUserMedia` API, connect the resulting stream to an analyser node for the meter, and — only when you press record — to a recorder whose output becomes a temporary object in the page's own memory. There is no upload, no server, and no audio processing anywhere but on your machine. Closing the tab discards everything; navigating away releases the device. The number validator and the cost calculator work from a lookup table that is part of the page you already downloaded. Neither sends the number or the country you typed anywhere. The planner reads your time zone from the browser and does arithmetic locally. The site does run Microsoft Clarity for anonymous usage analytics, which records page interactions, and that is disclosed in the privacy policy. It does not have access to your microphone or to anything you type into these tools. ## If a tool says everything is fine and the call still fails A green meter proves the microphone reaches the browser. It does not prove the audio reaches the person you are calling, and the gap between those two is where the remaining problems live. The most common one is that a second application has the device. On Windows and on macOS, an application that has claimed a microphone in exclusive mode can leave every other application with silence, and the browser will still show your headset in its device list. Quitting the other application — the conferencing client you left running, the recording software, the virtual audio router — is the fix, and it is worth doing before anything more elaborate. The second is that the conferencing application is using a different device from the browser. They keep separate settings. A browser test tells you the headset works; it tells you nothing about which input Teams selected when you plugged it in mid-meeting. The third is upstream. If your voice arrives broken up rather than absent, the problem is bandwidth or packet loss, not the microphone, and no microphone setting will fix it. Move closer to the access point, switch off other devices that are streaming, or use a wired connection. For calls placed with Telvio specifically, the app needs a working data connection but not a fast one: a voice call uses roughly 30 to 40 kilobits per second in each direction. What it does not tolerate well is a connection that drops packets in bursts, which is what a congested hotel or airport network usually does. ## Bottom line These seven tools cover the checks that resolve most call problems before they become call problems: is the microphone working and loud enough, is the number I have real and of the type I think, what will this cost, and is it a reasonable hour where I am calling. All of them run in the browser with no account and no upload. If a microphone test shows a healthy level and people still cannot hear you, the cause is almost always a second application holding the device, or the conferencing client using a different input from the one you just tested. ## Frequently asked questions Do I need to install anything to use these tools? No. All seven tools run in the browser tab you are already in. The microphone tests need a browser that supports the getUserMedia API, which every current version of Chrome, Edge, Firefox and Safari does. Is my microphone audio uploaded anywhere? No. The microphone tests process audio entirely on your device: the live meter reads the stream through a local analyser, and the six-second recording is held in the page's memory as a temporary object. Nothing is sent to a server, and closing the tab discards it. Why does the browser ask for microphone permission? Because a browser cannot read a microphone without your explicit consent, by design. The prompt comes from the browser itself, not from this page. Granting it applies only to this site and only until you revoke it in the site settings. Do the tools work on a phone? Yes. The microphone tests work in mobile Chrome and mobile Safari, though iOS requires the page to be served over HTTPS and will not grant microphone access inside some in-app browsers. The number, cost and time tools have no such restriction. Are the calling rates in the calculator real? Yes. They are Telvio's own published rates, read from the same file that prices the app, so the calculator and the app cannot disagree. Rates for providers that bill in whole minutes are computed at our rate to isolate the effect of the billing unit, and the page says so. Can the number validator tell me whether a number is active? No, and no browser-based tool can. It checks the number against the country's numbering plan: the country code, a plausible length, and whether the leading digits fall in a mobile or landline range. Confirming that a line is in service requires either a call or a network lookup. ## Now make the call Telvio dials real phone numbers in 200+ countries over WiFi or data. Per-second billing, first minute free. [Download Telvio](https://telvio.app/download/) --- HTML version: https://telvio.app/tools/ Structured data for this site: https://telvio.app/api/v1/openapi.json · https://telvio.app/llms.txt Free to quote and reuse with a link back to the source URL above (CC BY 4.0).