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 iOS app: In the “Chats” tab, click the new message icon in the right upper corner. Select “New Channel.” Don’t publish new content at nighttime. Since not all users disable notifications for the night, you risk inadvertently disturbing them. Concise The best encrypted messaging apps
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