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. Telegram Android app: Open the chats list, click the menu icon and select “New Channel.” A vandalised bank during the 2019 protest. File photo: May James/HKFP. How to create a business channel on Telegram? (Tutorial) Don’t publish new content at nighttime. Since not all users disable notifications for the night, you risk inadvertently disturbing them.
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