Apple has updated the technical specifications of the iPhone 4S, we see the Apple.com website now indicates that the new device is compatible with the positioning system GLONASS.

GLONASS (Global Navigation Satellite System) is a system of global navigation satellite developed by the Soviet Union and which is currently being administered by the Russian Federation and represents the alternative to the American GPS and European Galileo future.

At the moment we do not know if the new iPhone 4S navigation systems use both simultaneously or not. What is clear is that having two options allow us to locate our position more accurately TUAW

in Wikipedia - GLONASS