Nokia Lumia 2520: Maps & navigation
Positioning methods
Your tablet shows your location on the map using GPS, GLONASS, A-GPS, Wi-Fi, or network (Cell ID) based positioning.
The availability, accuracy and completeness of the location info depend on, for example, your location, surroundings, and third party sources, and may be limited. Location info may not be available, for example, inside buildings or underground. For privacy info related to positioning methods, see the Nokia Privacy Policy.
The Assisted GPS (A-GPS) network service and other similar enhancements to GPS and Glonass retrieve location info using the cellular network, and assists in calculating your current location.
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 traveling, you can turn the mobile data connection off.
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 turn Wi-Fi off.
To turn a connection off, swipe in from the right of the screen, and tap 
Settings > Change PC settings > Network > Airplane mode.
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.
