I agree. Give ATT a call or better yet visit on of the stores and they can usually fix it right on the spot.that mist be am issue with AT&T around you. I have gotten failed calls but not nearly as many as you. I'd say 2 or 3 since I got the 3G. You should try calling AT&T with your problem since I don't think it is an issue of the phone itself.
i had this problem I think yesterday. It's never happened before and I'm using the V1 iPhone with 2.0 software.
Certain phone numbers I'd try calling 20 times and it would keep beeping and saying call failed without even ringing and I'd have several bars of service. But if I hung up and tried a different number it would work fine. I thought at first there was just a problem with that number I had been dialing but later in the day same thing with a different number...refused to work but all other numbers I tried worked fine.
the 3G having few bars is not the same issue we are addressing here.My reception has been terrible since getting the 3g phone, always sits around 2 bars rarely3-4, and drops calls randomly. I came from a v1 phone with 1.1.2 software that I never upgraded because of was so snappy , I didn't want to deal with headaches and well now here I am :/
This best explains what I am experiencing after updating to 2.0 on my v1 iPhone. I never could call a certain number on iPhone, but it dialed with no problem with Verizon.it isn't dropped calls, the calls aren't even dialing or going through at all. And it's only certain random numbers that seemed to be having issues Number A won't work if you call it 30 times, call number B and it works fine, try calling number A again rigt afterwards and it still doesn't work.