How to Create a Private or Public Channel on Telegram? A new window will come up. Enter your channel name and bio. (See the character limits above.) Click “Create.” Developing social channels based on exchanging a single message isn’t exactly new, of course. Back in 2014, the “Yo” app was launched with the sole purpose of enabling users to send each other the greeting “Yo.” 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. To view your bio, click the Menu icon and select “View channel info.”
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