best-secure-messaging-apps-shutterstock-1892950018.jpg Telegram Android app: Open the chats list, click the menu icon and select “New Channel.” 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. Each account can create up to 10 public channels 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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