This security-focused messaging app allows you to register a unique username so that people can message or add you to groups without necessarily knowing your phone number. This way, you can keep your number private. Another great option in groups or channels is being able to pin messages. Tap a message and choose Pin to keep it at the top of the chat, where everyone can easily reference it. Telegram offers two types of APIs for developers. Both are free of charge.
The encryption is based on 2048-bit RSA encryption, 256-bit symmetric AES encryption, and Diffie–Hellman secure key exchange. On Android, simply slide out the left menu and choose New Secret Chat to start a new one. On iPhone, open a chat, tap the contact's name at the top, choose More, and then hit Start Secret Chat. However, Telegram only uses this encryption in calls and in its “secret chats” feature, not in regular chats. Those are only encrypted client to server. Meanwhile, WhatsApp, the supposedly less secure service, has used end-to-end encryption in all messages, calls, and video calls since 2016. Now, tap Profile Photo. Now, you have three options:
And under Advanced, you can change how much time must pass with no activity before Telegram will automatically delete your account. Go to Settings > Chat Settings to create your own theme. To lock your messages, go to “Settings”, “Privacy and Security” and tap on “Passcode Lock”. You will be asked to set a four-digit passcode and confirm it. Once you do that, you will find additional options to “unlock the app with fingerprint” and “auto-lock” it after a specific duration. Customize Your Telegram
Telegram Mute Option Never Share With: Hide your profile photo from specific people.
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