I still have my Verizon unlimited data plan grandfathered in when I purchased iPhone 5 at full price. I know I could just buy one at full price and keep the same plan, but I also have my upgrade available on my line and one other line. I could just buy phone at contract discounted price and activate it then deactivate and then activate on my line pretend that I bought a phone from someone else. I don't know if this method still works or not. So, how do you plan to keep your Verizon unlimited data plan?