Hi. I want to purchase a free phone from wirefly for t-mobile and then put the SIM card in my unlocked iPhone 3GS. Would this violate the wirefly contract? I read that you cant transfer numbers when you purchase through wirefly. Does this mean that you cant put your SIM into a phone that it didn't come with? I know this isnt an iphone forum but i couldnt think of anywhere else to ask this. Thanks for any help!