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Old 11-29-2007, 01:14 AM
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Kasracer , I have to respectfully disagree with your explanation. aGPS stands for assisted GPS... it doesn't mean that it's meant to assist a stand-alone GPS device, ie, one that derives all it's information primarily from the overhead satellites. A stand-alone GPS device doesn't need help... think about it. The OEM GPS system in my car never needs help locating a satellite. The stand-alone GPS receivers that you buy for your car (Tom-Tom) never need assistance. Even the small key chain models available don't need assistance. Either there is a signal or there is not.

Now, if a device is both GPS and aGPS capable, that just means if it can't see the sats, then it will use the cellular network to get its lat and long info. One has nothing to do with the other. That's why a flip phone with no standalone GPS capabilites can get location based services via aGPS. GPS and aGPS on a phone are distinct capabilities that have nothing to do with each other, other than the fact that a device may be capable of both and use each one as needed.
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