Nokia E5-00 - Manual (Page 106)

A-GPS requires network support.
Assisted GPS (A-GPS) is used to retrieve assistance data over a packet data
connection, which assists in calculating the coordinates of your current location
when your device is receiving signals from satellites.
When you activate A-GPS, your device receives useful satellite information from an
assistance data server over the cellular network. With the help of assisted data, your
device can obtain the GPS position faster.
Your device is preconfigured to use the Nokia A-GPS service, if no service provider-
specific A-GPS settings are available. The assistance data is retrieved from the Nokia
A-GPS service server only when needed.
To disable the A-GPS service, select
Menu > Applications > Location > GPS data
and Options > Positioning settings > Positioning methods > Assisted GPS >
Options > Disable .
You must have an internet access point defined in the device to retrieve assistance
data from the Nokia A-GPS service over a packet data connection. The access point
for A-GPS can be defined in positioning settings. A wireless LAN (WLAN) access point
cannot be used for this service. Only a packet data internet access point can be used.
Your device asks you to select the internet access point when GPS is used for the
first time.
Hold your device correctly
When using the GPS receiver, ensure you do not cover the antenna with your hand.
106 Positioning (GPS)