Telegram is introducing the ability to make encrypted voice calls. It offers end-to-end encryption, meaning it is super secure.
The Telegram interface is both familiar and easy to use. However, Telegram’s voice calling capabilities offer two major innovations over most of the competition: end-to-end encryption and granular control.
Telegram puts you, the user, in charge of who can and cannot call you. This precision control means you can turn voice calls on for everybody, just your contacts, or nobody. You can also restrict certain individuals from calling you on a one-on-one basis. It also offers crystal-clear call quality. It works on wi-fi as well as on cellular connections.
Telegram is rolling out encrypted voice calls on Android and on Apple iOS right now. The rollout is starting in Western Europe before expanding to the rest of the world. To gain the ability to make encrypted voice calls using Telegram you’ll need to update the app to v3.18.
Details may be found at: https://www.telegram.org/blog/calls.