GPS signal on devices

[Guest2]

I'm not sure if this is sport / mobile / IT equipment or what so have left it in here.

How come devices specifically built with GPS in mind cannot pick up GPS signal in doors? However mobile phones have no problem picking up GPS when inside

 

[Guest2]

In that case wouldn't it be better to integrate some sort of network service like 3G into GPS specific devices?

Ski tracks on my mobile works perfect in the mountains - no line of sight as its in my pocket

 

[Guest2]

Do you get a phone signal in the mountains? If not then using A mobile network would be pointless, does the GPS have to have at least 3 satelliteso to "triangulate" your position?

Yes. I always had 3G and good cell signal (Tignes / Val d'isere)

I'm not sure on the triangulation question

 

[Guest2]

SiRF star III appeared in 2006. Its now up to SiRF star V I believe.

My Garmin 910XT uses SiRF star IV and cannot detect satellites indoors