Nokia N8–00 User Giude page 77

Maps 77
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, WLAN, or 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.
Wireless local area network (WLAN) positioning improves position accuracy when GPS
signals are not available, especially when you are indoors or between tall buildings.
With cell ID based positioning, the position is determined through the antenna tower
your mobile device is currently connected to.
When you use Maps for the first time, you are prompted to define the internet access
point to use to download map information, use A-GPS, or connect to a WLAN.
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.
Establishing a GPS connection in the car, in bad weather conditions, or in a challenging
geographical environment may take longer.
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