I just bought an unlocked 1st gen iPhone. I have not been able to get the data plan to work (from AT&T). Someone suggested changing the APN, but I have not been able to do so for since I can't get to the point to chnage it. Here's the problem: When I go to Settings -> General -> Network ---- I don't see APN, I just see VPN, Wi-Fi. Do I need to do the reset network settings under Reset? Is there something else I need to be doing? Thanks.