So here is my problem. I have posted on a couple of other people's messages but I cant seem to find a solution. I am trying to do this on an iphone 4, with iOS 5, never been jailbroken, FaceTime used to work on iOS 4.3. Basic problem: I can not enable iMessage under settings--> messages-- iMessage. I flip it over to enable it and i can switch it from off to on. As soon as i eventually get back to the home screen or if I enable multitasking and click over to the message app and get come back to this screen the phone has iMessage -off. I have called the apple support and I didn't get anywhere with them. I was advised to take the phone in (seems like this has happened to one other person). Facetime Issue: Under settings, phone, there is no facetime settings. Also, there is no facetime setting anywhere else that I can find it. FaceTime used to work with the previous 4.3 software, for some reason it doesn't seem to be working now. What I've done to try and fix this: Hard reset. Delete iCloud and redo it. Turned off and on- not sure why I even did this. What I'm about to try: Reinstall iOS5. Why I'm killing time doing this: I cant believe I cant get iMessage to work on an iphone 4 when it works perfectly fine on my iphone 4s. Also, if anyone else has this problem, hopefully it will help them too without having to go into the store, doesn't seem to be a common problem. I'll be back to update after re-installing iOS 5 and keep others posted as to whether that works or not.