Nokia N8-00 User Manual page 92

92 Maps
About positioning methods
Maps shows your location on the map using GPS, A-GPS, WLAN, or network (cell ID) based
positioning.
A-GPS and other enhancements to GPS may require transferring small amounts of data
over the cellular network.
GPS
A-GPS
WLAN
Cell ID
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
info provided by GPS and cellular networks.
The GPS of this device is not for professional positioning. GPS connection time might
also be affected by weather, use environment, and other condition of use. GPS should
only be used as a navigation aid and should not be used for emergency or task which
requires more precise positioning.
Note: Using WLAN may be restricted in some countries. For example, in France, you
are only allowed to use WLAN indoors. After 1 July 2012, the restriction on outdoor usage
of WLAN in France is withdrawn. For more info, contact your local authorities.
Depending on the available positioning methods, the accuracy of positioning may vary
from a few metres to several kilometres.
The global positioning system (GPS) is a navigation system that
uses satellites to work out where you are.
The Assisted GPS (A-GPS) network service retrieves location
information using the cellular network, and assists GPS in
calculating your current location.
Your phone is set up to use the Nokia A-GPS service, unless your
network service provider has its own A-GPS settings. To get the
assistance data to your phone, you need to be able to connect to
the internet. Your phone gets the data from the service only when
needed.
WLAN positioning improves positioning accuracy when GPS signals
are not available, especially when you are indoors or between tall
buildings.
With network (cell ID) based positioning, Maps locates you through
the cellular system your phone is currently connected to.