Tools

Section 2F. Tools 123

䢇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.
䢇In a car. When using the GPS Enabled feature in a c ar,
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.
䢇Stay in network coverage. The network will provide your
phone with information that helps determine your
location more quickly and accurately.
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.
If your satellite almanac data is out of date, your phone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 service number.
Using GPS With Map Software
You can use the GPS feature of your phone to provide
approximate location data to a laptop computer or
similar device that is running interactive map software
such as that made by DeLorme or Microsoft. This way,
if your phone has good access to GPS signals, your
approximate position on a map can be made available
as you travel in a vehicle.
To do this, connect your phone to your laptop (or other
device) with a data cable and set your phone to
transmit data (see “To connect your phone to your
laptop or other device:” on page 124). Your phone then
provides your approximate location to the device
running the map software, which displays your location
on a map. Your phone provides an updated location
Note Although moving your phone at a walking pace
decreases GPS performance, moving it at the speed
of a moving car does not.
Note When you make an emergency call, your phone
does not rely upon the almanac to determine your
location.