I signed up with ATT Gophones for this very feature: address book syncing.
But when I activated my Gophone and added $25 to my account on my F160 (which ATT says, by the way, is compatible with Address Book), I get a message saying that Address Book syncing is not currently available on Gophones.
And to add insult to injury, they charged me on my pay-as-you-go data plan for that piece of information! Can you believe it?
Time to cancel my ATT account. This is a deal breaker.
Your GoPhone support site has instructions on how to use at&t address book for almost any GoPhone. Also, if at&t address book doesn't work with GoPhones, why would you put broken functionality on the device? Furthermore, what is wrong with giving prepaid customers useful services?