How to build a private or public channel on Telegram? 5Telegram Channel avatar size/dimensions The Channel name and bio must be no more than 255 characters long “Hey degen, are you stressed? Just let it all out,” he wrote, along with a link to join the group. In 2018, Telegram’s audience reached 200 million people, with 500,000 new users joining the messenger every day. It was launched for iOS on 14 August 2013 and Android on 20 October 2013.
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