I went to an AT&T kiosk at the mall to ask why my 3 way calling wasn't working. I was told that it was most likely my sim card, and that they could give me a new one right there and everything on my phone would still work exactly the same blah blah blah.. i would just have 3 way calling working too! so i let them do it. Long story short, 3 way calling still doesn't work. I enabled MMS (i'm on a family plan with family messaging, and have had MMS since 2.2.1 with swirly) and it has been working fine.. Up until i got the new sim card! My phone is using AT&T carrier settings 5, and i was using a mobileconfig from benm.at but when i went back to the site today it seems to be different than the one i loaded about a month ago. I can't send and recieve MMS no matter what settings i use, anybody have any ideas?