About positioning methods
Maps displays your location on the map
using GPS, A-GPS, WLAN, 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.
WLAN 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 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
To avoid network service costs, you can
disable A-GPS, WLAN, and network (cell ID)
based positioning in your device
positioning settings, but calculating your
location may take much longer. For more
information about positioning settings,
see the user guide of your device.
The Global Positioning System (GPS) is
operated by the government of the United
States, which is solely responsible for its
accuracy and maintenance. The accuracy
of location data can be affected by
adjustments to GPS satellites made by the
United States government and is subject
to change with the United States
Department of Defense civil GPS policy and
the Federal Radionavigation Plan.
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Accuracy can also be affected by poor
satellite geometry. Availability and
quality of GPS signals may be affected by
your location, buildings, natural
obstacles, and weather conditions. GPS
signals may not be available inside
buildings or underground and may be
impaired by materials such as concrete
GPS should not be used for precise
location measurement, and you should
never rely solely on location data from the
GPS receiver and cellular radio networks
for positioning or navigation.
The trip meter has limited accuracy, and
rounding errors may occur. Accuracy can
also be affected by availability and quality
of GPS signals.
Note: In France, you are only
allowed to use WLAN indoors.
Depending on the available positioning
methods, the accuracy of positioning may
vary from a few metres to several