Settings Call barringCall barring (network service) allows you to restrict thecalls that you make or receive with the device. To changethe settings, you need the restriction password from yourservice provider.To set an option on or off, select Activate or Cancel. Tocheck whether the option is active, select Check status.Call barring affects all calls, including data calls.Call barring and call diverting cannot be active at thesame time.When calls are barred, calls may be possible to the officialemergency number.NetworkNetwork mode (shown only if supported by the operator) —Select which network to use. If you select Dual mode, thedevice uses the GSM or UMTS network automatically,according to the network parameters and the roamingagreements between the wireless service providers.Contact your network operator for more details.Operator selection — Select Automatic to set the deviceto search for and select one of the available networks, orManual to manually select the network from a list ofnetworks. If the connection to the manually selectednetwork is lost, the device sounds an error tone and asksyou to reselect a network. The selected network must havea roaming agreement with your home network, that is, thenetwork used by the service provider whose SIM card is inyour device.Glossary: A roaming agreement is an agreementbetween two or more network service providers toenable the users of one service provider to use the
