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End-to-end encryption is an important feature in messaging, as it's the first step in protecting users from surveillance. Step-by-step tutorial on desktop: Telegram desktop app: In the upper left corner, click the Menu icon (the one with three lines). Select “New Channel” from the drop-down menu. 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)
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