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 channels fall into two types: Telegram iOS app: In the “Chats” tab, click the new message icon in the right upper corner. Select “New Channel.” With the administration mulling over limiting access to doxxing groups, a prominent Telegram doxxing group apparently went on a "revenge spree."
from us
