best-secure-messaging-apps-shutterstock-1892950018.jpg Telegram iOS app: In the βChatsβ tab, click the new message icon in the right upper corner. Select βNew Channel.β The optimal dimension of the avatar on Telegram is 512px by 512px, and itβs recommended to use PNG format to deliver an unpixelated avatar. How to build a private or public channel on Telegram? While the character limit is 255, try to fit into 200 characters. This way, users will be able to take in your text fast and efficiently. Reveal the essence of your channel and provide contact information. For example, you can add a bot name, link to your pricing plans, etc.
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