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. 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.” Telegram iOS app: In the “Chats” tab, click the new message icon in the right upper corner. Select “New Channel.” ‘Ban’ on Telegram
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