How to Create a Private or Public Channel on Telegram? Telegram Android app: Open the chats list, click the menu icon and select โNew Channel.โ The optimal dimension of the avatar on Telegram is 512px by 512px, and itโs recommended to use PNG format to deliver an unpixelated avatar. Telegram desktop app: In the upper left corner, click the Menu icon (the one with three lines). Select โNew Channelโ from the drop-down menu. Members can post their voice notes of themselves screaming. Interestingly, the group doesnโt allow to post anything else which might lead to an instant ban. As of now, there are more than 330 members in the group.
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