Regardig GPS. Is there a way to locate a phone number using gps? Without installing any apps to their cell phone. 
My question is Regardig GPS. 

Is there a way to locate a phone number using gps? Without installing any apps to their cell phone. 

I am interested in both Windows Mobile and iPhone. But please do include generic replies also.
Regardig GPS. Is there a way to locate a phone number using gps? Without installing any apps to their cell phone. 
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My question is Regardig GPS. 

Is there a way to locate a phone number using gps? Without installing any apps to their cell phone. 

I am interested in both Windows Mobile and iPhone. But please do include generic replies also.