I purchased an iphone 6 in February and it is not working properly. According to my contract I still owe $430 and cannot upgrade. However I purchased another iphone 6 2 weeks later for my daughter and that phone can be traded in with a payoff of $150. How can these 2 contracts be so different. I didn't trade anything in on either one and didn't do or purchase anything different. I think I got scammed on the first deal by a representative that didn't know what she was doing. Of course the one that I cannot buy out is the broken one. Any suggestions?