On Jun 26, 2011, at 10:02 PM, Jim Saklad wrote:
> DavidG wrote:
>> http://www.apple.com/ipad/specs/ this is a link to the Apple iPad spec page.
>
> Although the iPad specs page mentions "Assisted GPS", nowhere does it explain "Assisted GPS", what it is, how it works.
AGPS is a combination of GPS sats and cell towers. The iPad uses the GPS sats first - but they are not HUGELY accurate (that's the light blue circle). It iPad then locks on to cell phone towers. (I do not have a 3G account and this works.) Because of the way the cellular system works, each tower has a GPS location already calculate. The iPad then triangulates a more exact location.
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