AT&T decided that it won't allow its users to have any unlimited data plans for smartphones after like june of this year. My unlimited plan is grandfathered in, and I would like to keep it that way. but if i go to the at&t store and buy a captivate like I want, they are going to make me change my contract from the unlimited I have now to either 200mb or 2gb per month when they activate the phone. Would anyone know a way to buy a captivate and get it working with my current service without getting screwed out of my unlimited data by at&t? Is it really as simple as buying one from another source and transferring my sim card to the captivate? thanks