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12. Connectivity
Data connections and access points
Your device supports packet data
connections (network service), such as
GPRS in the GSM network. When you use
your device in GSM and 3G networks,
multiple data connections can be active
at the same time, and access points can
share a data connection. In the 3G
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 messages
• 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.
Network settings
Your device can automatically switch
between GSM and 3G networks. The GSM
network is indicated with
in the
standby mode. The 3G network is
indicated with
.
Select Menu > Ctrl. panel > Settings
and Phone > Network and from the
following:
Network mode — Select which
network to use. If you select Dual
mode, the device uses the GSM or 3G
network automatically, according to the
network parameters and the roaming
agreements between the wireless
service providers. For details and
roaming costs, contact your network
service provider. This option is shown
only if supported by the wireless service
provider.
A roaming agreement is an agreement
between two or more service providers
to enable the users of one service
84 Connectivity
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