Hi all, I'm going to snag a Tmobile 6+ eventually...when I do I'll need to get a Nano sim. So I'll have to bring the phone to the AT&T store. My current game plan is pay full retail now for the 6+ then by next release 6+S i'll be able to pay the subsidized upgrade with AT&T Does anyone know if bringing in the Tmobile unlocked phone and getting a new Nano sim will reset my 2 year agreement? IDK if they do this just because you got a new phone....I'd be really upset if they did though. I've seen a few posts here of people just swapping their sim to from their current phone to the unlocked phone. But In my case I'll need to visit an AT&T store to get a new nano sim. I'm worried they might take away my upgrade eligibility if I do that.