Motorola i570, User Manual, Page: 164 / 286

146 Section 2G: Using the Phone’s Tools
device for navigation. Remember that the accuracy of the
location information and the time needed to obtain it will
vary depending on circumstances, particularly the ability to
receive signals from adequate numbers of satellites.
On emergency calls, your phone uses assistance information
from the phone network to improve the speed and accuracy
of your phone’s location calculation: if such assistance
information becomes unavailable, it may reduce the speed
and accuracy of the location calculation.
The satellites used by the GPS feature of your phone are
controlled by the U.S. government and are subject to changes
implemented in accordance with the Department of Defense
GPS user policy and the Federal Radionavigation Plan. These
changes may affect the performance of the GPS feature of
your phone.
Making an Emergency Call
Dial 911 and press
O
to be connected to an emergency
response center. If you are on an active call, you must end it
before calling 911.
When you make an emergency 911 call, the GPS feature of
your phone begins to seek information to calculate your
approximate location. It will take the GPS feature of your
phone some time to determine your approximate location.
Even where your phone has good access to sufficient GPS
satellite signals and network assist data, it may take 30
seconds or more to determine the approximate location. This
time will increase where there is reduced access to satellite
signals. When your approximate location is determined, it is
made available to the appropriate emergency response
center.
In some cases, your local 911 emergency response center may
not be equipped to receive GPS location information. For this