This also affected one of my kids yesterday. They texted another iPhone user though. The originating text was converted to international number with the '+' sig

This also affected one of my kids yesterday. They texted another iPhone user though. The originating text was converted to international number with the '+' sign. Both are iPhone users. One is Verizon the other ATT. The problem was on the ATT end user's phone. They resolved the issue by deleting the thread with the bad contact number, closing the messaging app, and restarting the phone. Everything was normal after that. EDIT: I just remembered the funny part of all of this. My kid was trying to figure out who was hijacking their conversation when they contacted me. I asked them to send me the phone number disguised so that it isn't picked up as a phone number in the message app and I would check it out. A minute later I get a phone number that is obviously their own phone number. I pointed that out to them and had a good laugh. At that point we started blaming it on the app, not on some message international hijacker. Pretty funny that neither person in their conversation recognized the phone number.