Your AT&T network does not appear....so would I be wrong in gathering that you are using AT&T as your carrier? If so, why are you unlocking?

3Gs iOS 4.1 BB 06.15.00 Jailbroken using redsn0w 0.9.6b5 on Win 7, unlocked with ultrasn0w, and now up and runniing on T-Mobile network. Using MotionX GPS Drive (paid app from App Store) gets an accurate location when using Wi-Fi but not when I am running on my T-Mo internet. Also never connects to the GPS (All I am getting is the spinning red globe in the app - it never turns green, whether on Wi-Fi or not). Google Maps gives me the same results. Pretty accurate location while on Wi-Fi, but when running on T-Mobile internet connection only, puts me about 2-5 miles away from my actual location.