Telegram iOS app: In the “Chats” tab, click the new message icon in the right upper corner. Select “New Channel.” A vandalised bank during the 2019 protest. File photo: May James/HKFP. The SUCK Channel on Telegram, with a message saying some content has been removed by the police. Photo: Telegram screenshot. Select: Settings – Manage Channel – Administrators – Add administrator. From your list of subscribers, select the correct user. A new window will appear on the screen. Check the rights you’re willing to give to your administrator. 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.
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