UMTS
UMTS (Universal Mobile Telecommunications System) is a 3G mobile communication system. Besides voice and data, UMTS
enables audio and video delivery to wireless devices.
Your device can automatically switch between the GSM and UMTS networks.
To select which network to use, select
Menu
>
Tools
>
Settings
>
Network
and the network in
Network mode
. If you want
the device to switch between the networks automatically, select
Dual mode
.
The GSM network is indicated with , the UMTS network with .
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, for example,
browse the Web faster than previously possible while simultaneously speaking on the phone.