4How to customize a Telegram channel? To upload a logo, click the Menu icon and select “Manage Channel.” In a new window, hit the Camera icon. The administrator of a telegram group, "Suck Channel," was sentenced to six years and six months in prison for seven counts of incitement yesterday. 5Telegram Channel avatar size/dimensions 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.
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