There is an app at the app store called AT&T Mark the spot. This app is to mark your location when you get a dropped call or what ever other problem that you might have on the network. Supposedly it then transmits the info to AT&T to help them find the weak areas in their network. I had 3 drops in a 30 minute call in a open parking lot on my 3gs. Hopefully this will pinpoint where service is weak for them so they can FIX THE Dxxx NETWORK. Can you tell that I am pissed??