Kurt Ullman <kurtullman@yahoo.com> wrote in news:kurtullman-
3A5D15.01331808072007@customer-201-1....uninet.net.mx:

> In article <_ZZji.326$z64.60@trnddc07>,
> Wes Groleau <groleau+news@freeshell.org> wrote:
>
>> Kurt Ullman wrote:
>> > Most, although from my reading on google, seems as though some
>> > companies might be using a triangulation method from the cell towers.
>>
>> The documentation for my phone says that is
>> a backup whenever the GPS reception is poor.
>
> One of the articles I looked indicated that at least one of the
> Cell Companies had decided to go with the cheaper triangulation. Having
> said that, that was an article from around 2005 and market demands may
> have required the addition of GPS chips in the interim. Wouldn't be the
> first time the market overtook the regulators.
>

CDMA and iDen carriers decided to use GPS technology to satisfy E911
regulations, while the GSM carriers went with tower triangulation.Of
course, once the GPS technology was in the CDMA phone, it became real easy
to sell third party apps that used the technology.

GSM carriers showeed little vision with their decision to go with
triangulation.