Telegram is a messaging app with group chats, channels, file sharing, and other communication features. Safety tips Review who can see your phone number and profile information. Check active sessions and enable two-step verification. Regular cloud chats and Secret Chats have different encryption properties. Be cautious with unknown links and never share login codes. Official…

WhatsApp is a messaging and calling app for personal and group communication, with media and document sharing. Safety tips Enable two-step verification. Review group and profile privacy settings. Never share your registration code. Verify unusual money requests through another channel. Review backup encryption and privacy options in your settings. Official Google Play listing

Private messaging and voice/video calling are the core uses of Signal. Review the official download page and current device requirements before installing.