To edit your name or bio, click the Menu icon and select “Manage Channel.” 4How to customize a Telegram channel? 5Telegram Channel avatar size/dimensions Telegram iOS app: In the “Chats” tab, click the new message icon in the right upper corner. Select “New Channel.” The visual aspect of channels is very critical. In fact, design is the first thing that a potential subscriber pays attention to, even though unconsciously.
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