>>> 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.
This explanation is more or less backwards of how it actually works, but I think I am going to give up attempting to explain this, or re-quoting the Apple site as I did earlier. I haven't the patience.
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Jim Saklad mailto:jimdoc@me.com
Apple: Rise, and rise again, until lambs become lions
