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. Done! Now you’re the proud owner of a Telegram channel. The next step is to set up and customize your channel. Telegram Android app: Open the chats list, click the menu icon and select “New Channel.” Telegram channels fall into two types: The imprisonment came as Telegram said it was "surprised" by claims that privacy commissioner Ada Chung Lai-ling is seeking to block the messaging app due to doxxing content targeting police and politicians.
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