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• Stand still. If possible, stand still until your phone
is finished determining your location. Moving
your phone at a walking pace while your phone
is calculating your approximate location may
substantially decrease GPS performance.
• In a car. When using the GPS Enabled feature in
a car, position your phone so that the GPS
antenna has good access to GPS signals
through the car's windows. Typically, the GPS
antenna has best access to GPS signals in a car
when placed near a window.
Note: Although moving your phone at a walking
pace decreases GPS performance,
moving it at the speed of a moving car
does not.
• Stay in network coverage. Depending on who
your service provider is, the network will provide
your phone with information that helps
determine your location more quickly and
accurately.
Updating Satellite Almanac Data
Updating Satellite Almanac
Data
Another way to keep the GPS feature of your
phone working well is to keep your satellite
almanac data up to date.
The United States government maintains an
almanac of data about where GPS satellites are as
they orbit the Earth. This information is available to
your phone. Keeping your satellite almanac up to
date helps your phone determine your location
more quickly.
The almanac contains information about the
location of satellites, their operational status, and
other satellite information. Keeping this information
updated enhances the performance of your GPS
feature. In most cases, your phone will be able to
get a fix in strong satellite signal conditions with
outdated almanac data, but it may take longer.
Note: When you make an emergency call, your
phone does not rely upon the almanac to
determine your location.
If your satellite almanac data is out of date, your
phone may prompt you to update it. Follow the
instructions that appear on the phone's display.
You may be asked to go to a web site or call a
customer care number.
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