End-to-end encryption is an important feature in messaging, as it's the first step in protecting users from surveillance. The optimal dimension of the avatar on Telegram is 512px by 512px, and it’s recommended to use PNG format to deliver an unpixelated avatar. Content is editable within two days of publishing Click “Save” ; Telegram iOS app: In the “Chats” tab, click the new message icon in the right upper corner. Select “New Channel.”
from us
