The Standard Channel 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 create a business channel on Telegram? (Tutorial) Telegram iOS app: In the “Chats” tab, click the new message icon in the right upper corner. Select “New Channel.” But a Telegram statement also said: "Any requests related to political censorship or limiting human rights such as the rights to free speech or assembly are not and will not be considered."
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