just yesterday i got a contract with AT&T and got the 2gb data plan.... I was wondering if there was still a way to get the unlimited data plan? i heard that you can activate the iphone 2g (1st gen), and recieve the unlimited data plan that it comes with, and then just grandfather ur way to the iPhone 4, 3g, 3gs// any of this true?? does it still work? if not, what does?