On Wed, Oct 28, 2009 at 9:22 AM, tjpa <t...@tjpa.com> wrote: > On Oct 27, 2009, at 10:55 PM, mike wrote: > >> What is a real gps? I am assuming you mean the iPhone doesn't have one? >> > > The iPod uses triangulation based on cell phone towers with known > locations. I think this depends on getting a signal from at least 3 towers. > This is better in urban areas where cell towers are plentiful and line of > site to satellites is too often blocked. Advice to backwoods droids is to > simply move. >
This might be a change on the newer models but Apple now uses the GPS satellites. According to Apple the iPhone 3GS uses Sattelites, Cell Towers and Wi-Fi locations to give location information for the GPS. <http://www.apple.com/lae/iphone/features/gps.html> A known fixed point in addition to the satellites can give better information than the Satellites alone.. -- John Duncan Yoyo -------------------------------o) ************************************************************************* ** List info, subscription management, list rules, archives, privacy ** ** policy, calmness, a member map, and more at http://www.cguys.org/ ** *************************************************************************
