Only works for video, not audio. Audio is almost the only use I would have for it. I use a Mac Mini for my media center, and anything I would want to watch I'm probably going to watch from there anyway. But my music or audio books are probably already going on my iPhone, and when I get home or whatever, I just want to be able to send it to my Mac Mini.
burn dvd for mac Sprint and Verizon both run off 850/1900 CDMA/EV-DO Rev. A, so iPhone 3.2 and 4.2 could be model numbers for both carriers. I believe China Telecom (largest CDMA carrier) also runs off the same frequency. My mother's CDMA RAZR worked in China when she went over there on a trip.