First a little background. I have a 4S and my wife has a 4. We both have unlimited data with Verizon. We're not eligible for upgrades until the middle of March 2013. My dad has an iPhone 4 on Verizon w/ the 2GB data plan and my mom has a dumb phone, which she hates. She wants the free iPhone 4, and to move over with my dad to a shared family plan. My Plan... Give my mom my wife's 4, switch my 4S to my wife's line, and pay my mom to get the iPhone 5 for her new smartphone line, then switch it over to my line when it comes in. I know there's a lot of phone shuffling going on there, but the bottom line is, will this let me get an iPhone 5 and keep my unlimited data, or will Verizon try and screw me out of my data on some technicality? I did something similar with my dad when he decided to get his iPhone. I gave him my 4 and just paid for him to get the 4S and then we swapped devices.