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. Telegram Android app: Open the chats list, click the menu icon and select “New Channel.” With Bitcoin down 30% in the past week, some crypto traders have taken to Telegram to “voice” their feelings. Each account can create up to 10 public channels How to create a business channel on Telegram? (Tutorial)
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