Telegram iOS app: In the “Chats” tab, click the new message icon in the right upper corner. Select “New Channel.” 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. 6How to manage your Telegram channel? How to create a business channel on Telegram? (Tutorial) 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.
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