bank east asia october 20 kowloon How to Create a Private or Public Channel on Telegram? A Hong Kong protester with a petrol bomb. File photo: Dylan Hollingsworth/HKFP. Add the logo from your device. Adjust the visible area of your image. Congratulations! Now your Telegram channel has a face Click “Save”.! 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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