A roaming agreement is an agreement between
two or more service providers to enable the users
of one service provider to use the services of
other service providers.
the device to search for and select one of the
available networks, or
select the network from a list. If the connection
to the manually selected network is lost, the
device sounds an error tone and asks you to
reselect a network. The selected network must
have a roaming agreement with your home
Cell info display
— Set the device to indicate
when it is used in a cellular network based on
microcellular network (MCN) technology and to
activate cell info reception.
In connection settings, you can edit access points
and other connectivity settings.
You can also edit settings for Bluetooth connectivity
in the Bluetooth connectivity application.
"Settings", p. 43.
You can also edit settings for data cable connections
in the USB application.
See "USB", p. 46.
Data connections and access
Your device supports packet data connections
(network service), such as GPRS in the GSM network.
When you use your device in GSM and UMTS
networks, multiple data connections can be active
at the same time, and access points can share a data
connection. In the UMTS network, data connections
remain active during voice calls.
You can also use a WLAN data connection. Only one
connection in one wireless LAN can be active at a
time, but several applications can use the same
internet access point.
To establish a data connection, an access point is
required. You can define different kinds of access
points, such as the following:
MMS access point to send and receive multimedia
Internet access point (IAP) to send and receive e-
mail and connect to the internet
Check the type of access point you need with your
service provider for the service you want to access.
For availability and subscription to packet data
connection services, contact your service provider.