Signal-Android - A private messenger for Android, alternative to WhatsApp

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Signal is a messaging app for simple private communication with friends. Signal uses your phone's data connection (WiFi/3G/4G) to communicate securely, optionally supports plain SMS/MMS to function as a unified messenger, and can also encrypt the stored messages on your phone.

https://whispersystems.org
https://github.com/WhisperSystems/Signal-Android

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