We are sharing the comparison of the three most popular messaging apps.
Whatsapp uses end to end (E2E) encryption for communication as well as Signal. Telegram uses E2E in secret chats. The normal chat feature is not E2E encrypted in Telegram.
The Signal is fully open-source. You can check how it is implemented. Telegram is not fully open-source. Whatsapp is not open-source at all.
Signal and Telegram have self-destruction messages, while Whatsapp does not.
Data collected by Whatsapp:
Data collected by Telegram:
Data collected by Signal:
Firms that have messaging applications usually deal with advertising firms to make money. Nobody can interfere with your communication and read your messages. For our daily usage, all of the apps are safe. But if you are going to talk about critical issues related to national security, we recommend that you do not use these applications. Rules of companies may vary when it comes to national security.