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You can also able to set your chat to self-destruct in a certain period of time after it has been read or opened. See also: How to delete a Telegram account Hide Your ‘Last Seen’ From Certain Users

Edit and replace pictures while sending Open a Telegram chat Auto-Night Mode Secret chats

Telegram Chat Options To enable this go to Settings and choose “Privacy and Security” from the list. Next, tap on “Passcode Lock” under the Security heading, then set your password lock on! While all Telegram chats are client-server encrypted, default chats are still stored on Telegram's servers. This conveniently allows you to access your messages on multiple devices, but it might raise privacy concerns. Premium Animated Profile Pictures

To enable it, go to “Settings”, “Data and Storage”, and turn off automatic download “when using mobile data” and “when roaming”. You will also see options to turn off autoplay “GIFs” and Videos”. Premium 4 GB Uploads