Apple really needs a better iPhone answer to Google Navigation killer app

Lots of people claim that Apple's (AAPL) iPhone is the first smartphone to really unleash the potential of the Internet on a handset. And they are right. iPhone users suck up so much more Web time than Blackberry (RIMM) users (even though far more Blackberry units have been sold over time) that Apple partner AT&T (T) has struggled to handle the load and, by many indications, still can't keep up. But let's not forget that the iPhone's Web utility was not the only killer app in the mobile devices space.

Long before the iPhone hit it big, the GPS market was hockey-sticking. I watched this trajectory with amazement as Garmin (GRMN) devices went from geek gawkware to standard hardware for housewives in the O.C. and salesmen cruising the office parks of middle America looking to bag more clients.