5Telegram Channel avatar size/dimensions Done! Now you’re the proud owner of a Telegram channel. The next step is to set up and customize your channel. 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.” Administrators A new window will come up. Enter your channel name and bio. (See the character limits above.) Click “Create.”
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