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.
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 moreNo 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 morePer-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 moreMinutes 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 moreHow Telvio works
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.
Dial
Open the keypad. Enter any number with country code, or pick from your contacts. The per-minute rate shows before you connect.
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.
Telvio vs the rest
Try it before you buy
Every install includes one free minute. Call any country, test the quality, then decide.
Download TelvioWhat 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 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 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.
