I do not know the reason. It used to work with BB Maps until I upgraded to the VZW 4.2 OS and now it just gives me an error when I select "start GPS" It does work with Beyond411 the last time I tried it, but not with BB Maps or Live search. I'm now using OS 4.2.1.110 which i just updated a few weeks ago from an earlier version and it still does not work. FWIW, my BB Maps is v. 1.1.35, hich may or may not be the latest version. I did remove BB Maps and reinstall using the desktop manager, but just get the same error. It seems like I'm the only one with the problem since no one else seems to report this problem. If someone knows what it is, I'd love to hear it.