I brought a phone (HTC Desire P) from overseas to U.S.A. I got a voice/data plan with AT&T. We tested the voice but forgot to test data, and later found that the 3G data isn't working.
I tried to turn on mobile from the both from the UI (it auto disconnects after several seconds) and with the android debugger:
adb.exe shell data enable
but I get "Permission denied".
Does anyone know anything that could point me in the right direction?