Open Telegram app -> Settings -> Privacy and Security. Edit and replace pictures while sending What is Telegram?
Telegram Cloud 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! If you want to add a second number instead of migrating, Telegram also lets you use multiple accounts at once. For Android, on the left sidebar, tap your contact info to expand the account switcher and choose Add Account. On iPhone, tap Edit on the profile page and choose Add Another Account. Set Reminders
You'll have four options to choose from: You can surely delete messages that you have sent, but did you know that Telegram has brought a new feature that lets you delete messages sent by other users too. That’s kind of weird, but this feature is for users who prioritize privacy over everything. To use this feature, just select the received message and tap on the “delete” button. Now, select “Also delete for X” and tap on “Delete”. The message will disappear from both ends without leaving any trace. There’s no denying the fact that Telegram became as popular as it is because of its focus on privacy. The service not only provides end-to-end encryption on the server-side of the things but also allows users to lock their chats. This is great for safeguarding your personal chats when you are handing out your device to anyone else. To preview a chat, simply press and hold its profile picture in your chat list.
As you might now, Telegram allows you to create Channels which is a tool for broadcasting public messages to large audiences. The basic difference between a group and a Channel is the fact that a Channel can have unlimited numbers and the messages you sent inside a Channel are marked with the Channel name and not yours. However, if your channel is very large, it might become difficult to broadcast a message which is ready by everyone before it is lost in other messages. To solve this problem, you can pin messages inside a Channel. To pin a message, just tap on it and tap on Pin. Now the message will always be on top before the reader removes them. 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.
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