The battery in my girlfriends old dumb phone is playing up. So I decied to give her my old iPhone 3G. The trouble is she is on a different network/carrier.
When I put here sim card in and go to Settings, Carrier I get "Unable to load network list".
I installed whited00r and have used redsn0w to jailbreak and tried ultrasn0w.
It is iOS 3.1.3 base band 05.15.04. Is there anything I can do to unlock this?