The Go Phone service is a prepaid wiresless service provided by AT&T aimed at those who do not want to be tied down to a wireless contract with their carrier. ATT also operates the AIO Wireless Service, which we reviewed a while back. They both get you the same service (no contract), but the Go Phone program is on the flagship network without any of the restrictions that are placed on some of the AIO Wireless plans. If you have a Go phone and would like to reach a live customer service agent, follow our instructions below: