Telegram Android app: Open the chats list, click the menu icon and select βNew Channel.β How to Create a Private or Public Channel on Telegram? 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 Create a Private or Public Channel on Telegram? Your posting frequency depends on the topic of your channel. If you have a news channel, itβs OK to publish new content every day (or even every hour). For other industries, stick with 2-3 large posts a week.
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