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Re:IPhone 4S has GLONASS in addition to GPS by foobarbazetc on Wednesday October 19, 2011 @08:11AM (#3129747)
GLONASS+GPS is more accurate than just GPS, so the answer to your question is no. :)
Re:IPhone 4S has GLONASS in addition to GPS by zimpenfish on Wednesday October 19, 2011 @08:58AM (#3129913)
Only if your software is aware and dealing with it correctly, I'm guessing.
Re:IPhone 4S has GLONASS in addition to GPS by fleitz on Wednesday October 19, 2011 @02:10PM (#3131309)
There isn't a GPS / Galileo / GLONASS / AGPS api in iPhone, you just get location data.

Apple generally doesn't expose APIs that require working knowledge of general relativity.