iMessage has stopped working on iPhone
Recently I have noticed that iMessages don't pop up on my iPhone lock screen. I don't know if this is related but I also just bought a Mac and hooked it up to iMesssage. I still receive messages on my iPhone but they don't show on the lock screen and also the app icon doesn't have the red indicator to say a message is waiting. I've tried the usual stuff (log off iMessage etc) but it's still not working.. Is this a know problem? Maybe the iPhone is too old (iPhone 4)...
Cheers.
iPhone 4, iOS 7.1.2