I want the new Iphone 3g S, but I can't stand to pay $30 a month for data that I won't use, since wifi in my area is virtually everywhere. Is there any way to get around this? Such as buying the Iphone with the minimum service, but then cancel the plan 3 days later. Then jailbreak it (once this solution is available), and use another At&T Sim card? Will this work? If not, what is the cheapest way to get an iphone without a data plan in the US?