Network mode — Select which network to use. If you select Dual mode, the deviceuses the GSM or 3G network automatically, according to the network parametersand the roaming agreements between the wireless service providers. For detailsand roaming costs, contact your network service provider. This option is shown onlyif supported by the wireless service provider.A roaming agreement is an agreement between two or more service providers toenable the users of one service provider to use the services of other serviceproviders.Operator selection — Select Automatic to set the device to search for and selectone of the available networks, or Manual to manually select the network from alist. If the connection to the manually selected network is lost, the device soundsan error tone and asks you to reselect a network. The selected network must havea roaming agreement with your home cellular network.Cell info display — Set the device to indicate when it is used in a cellular networkbased on microcellular network (MCN) technology and to activate cell info reception.Wi-Fi/WLAN connectionYour device can detect and connect to wireless local area networks (WLAN). Usinga WLAN, you can connect your device to the internet and compatible devices thathave WLAN support.About WLANTo use a Wi-Fi network connection, it must be available in the location, and yourdevice must be connected to the Wi-Fi network. Some WLANs are protected, andyou need an access key from the service provider to connect to them.Note: Using Wi-Fi may be restricted in some countries. For example, inFrance, you are only allowed to use Wi-Fi indoors. For more information, contactyour local authorities.Features that use WLAN, or that are allowed to run in the background while usingother features, increase the demand on battery power and reduce the battery life.76 Connectivity