Telegram Android app: Open the chats list, click the menu icon and select “New Channel.” Channel login must contain 5-32 characters 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. Telegram iOS app: In the “Chats” tab, click the new message icon in the right upper corner. Select “New Channel.”
from us