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Cell phones don't use only GPS signals, they use "aGPS" which uses signals from cell towers to make the GPS calculations easier / faster. It's so effective in
by philsnow 9y ago
Cell phones don't use only GPS signals, they use "aGPS" which uses signals from cell towers to make the GPS calculations easier / faster. It's so effective in environments that the overwhelming majority of people spend the overwhelming majority of their time in that I think manufacturers don't include the very best GPS antenna, since they don't need to.
You say you were in remote areas, how was your cell signal during the time you couldn't get a GPS fix?
- jhayward 9y agoaGPS doesn't provide any useful positioning capability, it just speeds up downloading of the Almanac and Ephemeris which means the receiver doesn't have to listen to the GPS satellites as long before computing a position. You still need a good GPS signal for positioning to work.