So -- I upgraded last year to a 5S with a full subsidy from AT&T. I have a grandfathered unlimited plan, and as I have only one line, it would cost me a ton to give it up. If I want the iphone 6, I assume I have to pay full price to get it either from AT&T or unlocked. Am I correct that if I buy it from AT&T full price, it renews my contract anyway? And it is definitely locked? I am thinking that is true and that I'd be better off buying it unlocked and not extending my contract. My fear is that they would take away my grandfathered plan, either right away or when my contract expires in a year. Has anyone tried this before? Am I misunderstanding anything? I get that I have a year to go on my contract either way; I just in theory would prefer an unlocked phone if it isn't going to cost any more, and I don't see any reason to extend my contract by another year in exchange for nothing from AT&T.