So I basically won an iPhone 6 from T-Mobile...I thought about selling it and getting some cash for it(I am sure a brand-new iPhone in box unopen can sell for a lot...how much idk..never sold an iPhone). But I am entertaining the idea of actually using it....and when Windows 10 comes out with new Lumias, trading it in then....that being said I have some questions 1. Do iPhone 6's come with Wifi calling on T-Mobile? 2. I heard something about T-Mobile iPhones come unlocked? Is this true? This is one mailed to me from T-Mobile themselves. 3. LOL how much does a new unopened IPhone go for if I decided to sell it.... 4. How much would it go for if I open it This is the iPhone 6 16 GB space gray model. I did play around with the iPhone last year and owned one... but I missed my Lumia/Windows phone and I went back...But now that I have a free one, I don't technically have to give up my lumia as I still have it here haha and can use it anytime I want.