I am planning on buying a verizon Audiovox XV6800(it's cheaper than mogul). Both networks are CDMA.The Audiovox will need to be flashed, but will it work?

I am currently on the sprint network, my parents don't plan on changing any time soon. I know there are stores that can do the flashing for me, but what I want to know is what features will work after flashing. I am hoping the wifi (if any) will still work.