I just got my phone today as well (Samsung Galaxy S2) and am having the same problem...well, it doesn't call someone, but it does say "invalid MMI code" what ever that means. As far as calling 611, well I tried that, but I happened to have gotten my phone on a Sunday and they close early. This really sucks, as I am going out of town early and wanted it set up before I left. This isn't helping, but I am curious WHY AT&T is putting this new customer of theirs in such panic. Now I just got a message from them saying to go to another web site....funny the tutorial site for my phone is down today too...I hear Verison calling in the wind. I think they want me back...off to yet another site.