Hey folks, I'm a newcomer here. Done a lot of Googling around but my problem is pretty rare and specific so finding similar resolved issues was nearly impossible. I decided to come here and give a shot at asking the pros. Here's my problem: I have one contact in my list that I text often. For some reason, I can only send him a new text. When he replies, and I try to reply back, I get a "message unable to send" notification. I then have to delete our conversation thread, and send him a brand new text, which goes through fine every time. Every once in a while, a reply will go through, but it happens so rarely that I don't even bother to try anymore. I've tried completely deleting his contact, adding a +1 before the area code, typing in his number, etc, etc. Here are the specs on my phone: Motorola Milestone XT270 Android 2.1 Using stock messaging app His contact is identical to all my others, except his number of course Never have issues texting anyone else but him He said no one else has ever complained about this to him and he really doubts it's his phone Does my phone need flashed back to stock or something?