Gang chat is the place where you can communicate with your gang mates.
To open the chat, navigate to My Gang menu and tap on the chat icon in the lower right corner.
You can also turn off the system chat notifications in the gang settings tab.
If you have chosen 1-16 age on the start screen the social functions like Facebook and guild chat will not be available. Unfortunately, we cannot turn them on, but you can reinstall the game, create a new account and choose a different age.