What is Telvio?
Telvio is a calling app for real phone numbers, landlines and mobiles in 200+ countries. No registration and no subscription. You install it and you can call right away, and you get one free minute to check the quality first. After that you buy a pack of minutes once, from $1.99, and they never expire. Billing is per second with no connection fee. The person you call just picks up their normal phone, they don't need the app.
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