A vandalised bank during the 2019 protest. File photo: May James/HKFP. ZDNET RECOMMENDS 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. End-to-end encryption is an important feature in messaging, as it's the first step in protecting users from surveillance. Telegram desktop app: In the upper left corner, click the Menu icon (the one with three lines). Select “New Channel” from the drop-down menu.
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