How to create a business channel on Telegram? (Tutorial) 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. Users are more open to new information on workdays rather than weekends. How to Create a Private or Public Channel on Telegram? A vandalised bank during the 2019 protest. File photo: May James/HKFP.
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