In a previous article, John Theune said:
I've been wondering about this. Why do all the GPS packages require a
separate GPS receiver when there is one built in to phone? All cell
phones built in the last 2 or 3 years have required GPS location built
in so why does the flight package simply use that receiver instead of
needing a external one?

That's not true. All cell phones built to do E911 have to have some way
to determine their location, but most of them don't use a GPS, they use
triangulation from the cell towers. Just look at the FCC certification
documents for the Apple iPhone, and you will see no GPS in it.

--
Paul Tomblin http://blog.xcski.com/
Ahhh, the permie offer. The "Please sign up with us clueless fsckwits
so you can spend all your time digging us out at a pittance" offer.
-- Dan Holdsworth