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. Add up to 50 administrators To upload a logo, click the Menu icon and select “Manage Channel.” In a new window, hit the Camera icon. The SUCK Channel on Telegram, with a message saying some content has been removed by the police. Photo: Telegram screenshot.
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