2How to set up a Telegram channel? (A step-by-step tutorial) 5Telegram Channel avatar size/dimensions 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.” A Hong Kong protester with a petrol bomb. File photo: Dylan Hollingsworth/HKFP. It’s easy to create a Telegram channel via desktop app or mobile app (for Android and iOS):
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