How to Create a Private or Public Channel on Telegram? With Bitcoin down 30% in the past week, some crypto traders have taken to Telegram to “voice” their feelings. Step-by-step tutorial on desktop: A new window will come up. Enter your channel name and bio. (See the character limits above.) Click “Create.” 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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