5Telegram Channel avatar size/dimensions To upload a logo, click the Menu icon and select “Manage Channel.” In a new window, hit the Camera icon. To view your bio, click the Menu icon and select “View channel info.” Telegram Channels requirements & features 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.”
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