Yet again, another scheme of how one might get an iPhone. So basically, heres the rundown. I live in South Dakota, and if you look on AT&Ts coverage maps, South Dakota is not officially covered. Thus, if you try to get a plan here, they won't sell it to you. However, I know several people who are here for summer, they've got AT&T, and they get...okay service. Email, browsing, etc., is hit or miss, but they still have kinda good voice coverage. My question/scheme is this. Will it work if I sign up for the plan in an area that is officially covered, and just use it in SD instead? Will I incurr tons of roaming charges for only using it in SD?