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. A Hong Kong protester with a petrol bomb. File photo: Dylan Hollingsworth/HKFP. Users are more open to new information on workdays rather than weekends. It’s easy to create a Telegram channel via desktop app or mobile app (for Android and iOS): Telegram iOS app: In the “Chats” tab, click the new message icon in the right upper corner. Select “New Channel.”
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