Nokia Lumia 925 User Manual page 80

A-GPS and other enhancements to GPS and GLONASS may require transferring small amounts of data
over the cellular network. If you want to avoid data costs, for example when travelling, you can switch
the mobile data connection off in your phone settings.
Wi-Fi positioning improves positioning accuracy when satellite signals are not available, especially
when you are indoors or between tall buildings. If you're in a place where the use of Wi-Fi is restricted,
you can switch Wi-Fi off in your phone settings.
Note: Using Wi-Fi may be restricted in some countries. For example, in the EU, you are only
allowed to use 5150–5350 MHz Wi-Fi indoors, and in the USA and Canada, you are only allowed
to use 5.15–5.25 GHz Wi-Fi indoors. For more info, contact your local authorities.
The trip meter may not be accurate, depending on the availability and quality of your satellite
connection.
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