The optimal dimension of the avatar on Telegram is 512px by 512px, and it’s recommended to use PNG format to deliver an unpixelated avatar. How to create a business channel on Telegram? (Tutorial) End-to-end encryption is an important feature in messaging, as it's the first step in protecting users from surveillance. Telegram Android app: Open the chats list, click the menu icon and select “New Channel.” 2How to set up a Telegram channel? (A step-by-step tutorial)
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