I was able to keep my unlimited data plan with my iPhone 5; my contact expires in October 2013. What will happen to my UDP when my contract expires? Will I need to 'upgrade' my phone at that time? Could I just continue to use my iPhone 5 and just, uh, 'renegotiate' my contract with Verizon to extend it the normal 2 more years while also keeping my UDP? Any input is appreciated.