46• Security — to change the phone and SIM card settings, such as PIN and lockcodes; to view certificate details and check authenticity, and view and editsecurity modulesWhen security features that restrict calls are in use (such as call barring, closed user group,and fixed dialing), calls may be possible to the official emergency number programmed intoyour device.• Factory settings — to reset some of the settings to their original values. Youneed the lock code.• Positioning (network service) — to enable a positioning method and to define apositioning server.With the positioning service you can receive information from serviceproviders about local issues such as weather and traffic conditions, based onthe location of your device.PhoneSelect Menu > Settings > Phone sett. > Phone and from the following:• Call — to adjust the call settings, such as Send my caller ID (network service) todisplay or hide your number; Reject call with SMS to enable rejecting phonecalls with a text message; and Speed dialling to activate the speed dialingfunction• Call divert (network service) — to divert incoming calls to your call mailbox oranother phone number• Call barring (network service) — to restrict the calls that you make and receivewith your phoneCall barring and call diverting cannot be active at the same time.When calls are barred, calls may be possible to certain official emergency numbers.• Network — to select which network mode to use, to set the phone toautomatically or manually select one of the available network operators (ifallowed by the service provider), or to set the phone to indicate when it is usedin a cellular network based on microcellular network (MCN) technology(network service)ConnectionSelect Menu > Settings > Phone sett. > Connection and from the following: