End-to-end encryption is an important feature in messaging, as it's the first step in protecting users from surveillance. 5Telegram Channel avatar size/dimensions Image: Telegram. A new window will come up. Enter your channel name and bio. (See the character limits above.) Click “Create.” 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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