I'm new to Mac Forums (technically, I do visit a lot but first time posting) and I have a Samsung Flight with AT&T. My cellular plan includes unlimited messaging and data with at&t. I am thinking of buying an iPhone 2G from eBay but I'm not willing to sign for the iPhone data package. Can I still use the iPhone with my current average data pack or do I have to sign over to the iphone one? Will it work? I have heard from some that they have had their accounts frozen and some were switched without knowing to the data plan for iPhone. Would I be better off with getting a prepaid sim from eBay?