To delete a channel with over 1,000 subscribers, you need to contact user support Done! Now you’re the proud owner of a Telegram channel. The next step is to set up and customize your channel. ‘Ban’ on Telegram 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. How to build a private or public channel on Telegram?
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