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. Concise To delete a channel with over 1,000 subscribers, you need to contact user support Telegram iOS app: In the “Chats” tab, click the new message icon in the right upper corner. Select “New Channel.” Avoid compound hashtags that consist of several words. If you have a hashtag like #marketingnewsinusa, split it into smaller hashtags: “#marketing, #news, #usa.
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