Hey, I am at a loss here. My wife and I both have iPhone 5's. Both running iOS7. I recently moved her from T-Mobile to ATT and once I did our messages started acting strangely. Whenever she texts me it comes through as an iMessage but whenever I text her it is sent as a text, it never tries to send as iMessage. I have no problem iMessaging with anyone else, only her. I have tried turning iMessage off and back on (on both of our phones) with no luck. I have deleted the message thread from both phones and started new ones. I have restarted both phones. Nothing seems to fix it. I have no idea what this is...