Telegram Android app: Open the chats list, click the menu icon and select “New Channel.” 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. On June 7, Perekopsky met with Brazilian President Jair Bolsonaro, an avid user of the platform. According to the firm's VP, the main subject of the meeting was "freedom of expression." The Channel name and bio must be no more than 255 characters long
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