iMessage quit working on Touch

My stepson's iMessage just quit working on his Touch. We get thrown to the activation screen and when we go to login using his login credentials, it goes to the next screen, then almost immediately flashes back to the activation screen. We've tried creating a new account and it does the same thing. We also notice that if we go into Contacts and try to click on Facetime nothing happens. We've tried rebooting (power button & Home button) and that doesn't work. I'm stumped. Anyone have any ideas? He's running 5.1.1 on it. It was working about a week ago.