IF you spend a bunch of time googling, lol, you will get totally frustrated with what the rest of the world calls "GPS" having a Tom Tom voice tell you where to turn is not what I concider real GPS ability. Very few reviews of GPS capability that a Garmin/Magellan would offer. Most of the "location based services" as the smart phone reviews call them are Tom Tom like services that require a monthly service fee on top of your current plan. I would bet within the next year all the major phone sellers will offer a "real" GPS phone that will work without a data signal (at least the GPS part).
I won't hold my breath though, the technology is there my bet is they are trying to figure out how to charge us for it, lol