I'm getting my iPhone 3G S tomorrow. First time iPhone user. Anyway, I'm curious about how the unlimited data works. Can I use it anywhere in the United States without getting charged for roaming? Or is it just if I leave my home town (Kennewick, WA)? I have unlimited texting and about 1400 minutes a month on a shared family plan if that makes any difference. As far as I know, I've never been charged extra for sending texts and/or making calls when I travel. I'm wondering if the Data is the same. Thanks for the help.