Hey all.... I pre-ordered and received a Sprint Iphone 6+ on launch day. It's never been activated, and it's currently sitting, still sealed in the apple white box (only UPS shipping box was opened). Was just about to open it when I realized that it was silly having such an awesome phone with such crappy, slow data service--sorta like having a sick Porsche that can only go 20 mph. So I decided a couple days ago that I am switching carriers as there's no use in having my first 4g LTE phone if the speeds are going to suck. I believe that despite not activating the phone, having purchased at the subsidized cost *automatically* renews my contract. (Is this correct?) Not a big deal since I was planning on going to T-mobile who pays ETF fees. So I'm wondering if I can sell my unopened Sprint iphone. I'm just worried that the phone may not work for another buyer since technically sprint knows my account should be associated with that particular iphone serial/ID. Again I have not activated it and when I log in to my sprint account, my old phone (iphone 4s) is the one still registered and acknowledged.