My iphone 4 can send imessages to itself, but when sent to others, it isn't delivered. Also, other iphone users can't send me imessages. How can I fix it?
I have tried turning imessage on and off, logging out of my apple ID, and only have my number connected to imessage. The only thing I can do is click the failed message and send as an sms. Also, can't facetime anyone.
iPhone 4, iOS 5.1.1