I've moved to a new state, added a new line to my ATT account, and got the number changed to a local one on my Iphone 6s Plus. At first I couldn't get any texts or imessages, fixed that by changing my number in settings to the local one. But I now I can't get my imessages to work. Signing in and out of my apple ID just changes the number back to the old one. I've tried multiple combinations of resetting my network and whatnot and nothing is working. The last thing I'm going to try doing is a factory reset and restore. Anybody know how to fix this?