iMessage Problem.

All of a sudden neither my wife nor I can send iMessages to each other. We can send and receive to others, just not ourselves. The message goes off with the normal whoosh, and can show Delivered, or not, but nothing arrives at the other end. With WiFi/Router off, we can text each other ok.

We both have 3GSs and iOS 6.1.3

Any suggestions please?

 

Thanks. Just got it sorted. Turned iMessage off then on on both iPhones and it worked. When going into iMessage in Settings it was showing the "Start New Message From" box, which wasn't there this morning.