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Maps & navigation
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If you don't have the game, but it is available in your area in Marketplace, you can
either download a trial version or buy it right away.
Resume playing a game
When you return to a game, there may be a resume icon in the game itself. Otherwise,
tap the screen.
Maps & navigation
Positioning and location services
About positioning methods
Your phone shows your location on the map using GPS, A-GPS, Wi-Fi, or cellular
positioning.
A-GPS and other enhancements to GPS may require transferring small amounts of
data over the cellular network.
GPS
A-GPS
Wi-Fi
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 information provided by GPS and cellular networks.
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.
To save on data costs, you can switch A-GPS off in your phone
positioning settings, but calculating your location may take much
longer.
Wi-Fi positioning improves positioning accuracy when GPS signals
are not available, especially when you are indoors or between tall
buildings.
You can also switch Wi-Fi and cellular positioning off in your phone
settings.
With network (cell ID) based positioning, your phone locates you
through the cellular system your phone is currently connected to.