For some unknown reason my phone will almost never send an iMessage to this one other person on my contacts. We have never had this problem until this morning. After many googlings I tried peoples ideas like changing the DNS numbers of the Wifi and such. I deleted the contact and re made it, and I deleted the thread but this problem still persists occasionally. Even when Im connectedt to 3g or wifi that I've always been connected to. This issue started this morning and hasn't stopped, and I've texted multiple people with iMessage and have been successful. I also restarted my iphone and i REALLY dont want to restore it because I always lose ALL my contacts no matter what. All help is greatly appreciated!