About Positioning Methods - Nokia E7-00 User Manual

Maps 89
The compass has limited accuracy. Electromagnetic fields, metal objects, or other
external circumstances may also affect the accuracy of the compass. The compass should
always be properly calibrated.

About positioning methods

Maps displays your location on the map using GPS, A-GPS, SA-GPS, Wi-Fi, or network (cell
ID) based positioning.
The global positioning system (GPS) is a satellite-based navigation system used for
calculating your location. Assisted GPS (A-GPS) is a network service that sends you GPS
data, improving the speed and accuracy of the positioning. Self-assisted GPS (SA-GPS)
provides the fastest positioning without using a network connection.
Wi-Fi network positioning improves position accuracy when GPS signals are not
available, especially when you are indoors or between tall buildings.
With network (cell ID) based positioning, the position is determined through the
antenna system your cellular phone is currently connected to.
To save on data costs, you can deactivate A-GPS, Wi-Fi, and network (cell ID) based
positioning in your device positioning settings, but calculating your location may take
much longer.
The availability and quality of GPS signals may be affected by your location, satellite
positions, buildings, natural obstacles, weather conditions, and adjustments to GPS
satellites made by the United States government. GPS signals may not be available inside
buildings or underground.
Do not use GPS for precise location measurement, and never rely solely on the location
information provided by GPS and cellular networks.
The trip meter may not be accurate, depending on the availability and quality of your
GPS connection.
Note: Using Wi-Fi may be restricted in some countries. For example, in France,
you are only allowed to use Wi-Fi indoors. For more information, contact your local
authorities.