so I am going to be buying me an iPhone 10 when I am able to but I wanted to know if I would get it faster getting it from apple as I do plan on buying the iPhone 10 256GB. I was thinking it would be better because then I would be able to sell my current iPhone 7plus 256gb and put that money to my iPhone 10? would I still be able to even get a good price for my current iPhone 7 plus? would I get it faster from apple or tmobile or the same time?