how does your contract "expire"? from what I understand about this, as long as I buy another smartphone when I DO upgrade, I get to keep my unlimited data. for example, my upgrade date is 20 july 2013. when I renewed, it was for two years. theoretically, I have until November of 2013 to upgrade. honestly, I don't think it even "expires" then, but this is based only on my speculation. I've never waited one day past my eligible upgrade date, so it would shock me if I don't have a new smartphone on 21 July, 2013. IF I waited until past november 2013, I don't see why I wouldn't be able to grandfather over the current unlimited data plan I currently have. maybe someone with VZW can clarify???