I have had the HTC Desire S for a while now, and there is one problem I can't seem to fix. The phone seems to constantly drop the area code off and all messages I receive from just one specific contact. So when I go to reply to that person, I get a 9230 error (not using a ten digit number) and I have to go to my contacts screen and choose to send a new message from there. Give me ideas to fix it?