A number of Android tablets have GPS without Cellular. So why is Apple forcing you to get Cellular if you just want GPS? Some guesses I have is: Shared antennas. Cellular (Qualcomm?) chip includes both functions. A-GPS (using cellular to quickly download updated satellite data) or all of the above? Also a ? about A-GPS, does one get the satellite data even if you do not subscribe to cellular service??? EDIT:Wiki says "For billing purposes, network providers often count this as a data access", so this suggest it does require subscription, but not conclusive.