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Upload Multiple Profile Pictures to Telegram To lock a chat go to Settings->Privacy and Security->Passcode Lock and enable it. Once you create a passcode and enable it, you will be able to lock and unlock your chats by tapping on the lock icon at the top right of the app. Telegram Saved Files

Telegram is all about privacy and security, and it isn't beholden to larger companies like Facebook. The app also lets you make location-based groups, a local group that works in a small region for co-worders, students, or neighbors. Once you have created the group, users in the vicinity will be able to view it on their device and join. In fact, Telegram supports verifiable builds that allow outside developers to check whether the code published on GitHub is the exact same code that is used to create the app, which you have downloaded from Google Play or App Store. Stop Being Added to Random Groups

How often have you sent a message to a colleague or friend and then realized it is filled with typos? With Telegram, you can quickly make it right with its edit feature. Set Auto-Delete Timer for a Telegram Chat Hopefully, I have listed enough Telegram features to help you understand why the Telegram app is so popular and secure. Telegram allows you to schedule messages to be sent at a particular time. Further, you can also send ‘silent’ messages without sound when you do not want to disturb the receiver. This can be ideal when you want to send your boss a message, while you know he/she is in a meeting or when you want to send a friend something important when they’re out with their family.

Better Bots If you need to know everything about Telegram, they have a nicely categorized FAQ page so you can refer to it for deep information.