42 Copyright © 2007 Nokia. All rights reserved.code every time the phone is switched on.Some SIM cards do not allow the coderequest to be turned off.PIN2 code request—to select whether thePIN2 code is required when using a specificphone feature which is protected by thePIN2 code. Some SIM cards do not allow thecode request to be turned off.Call barring service—to restrict incomingcalls to and outgoing calls from your phone(network service). A barring password isrequired.Fixed dialling—to restrict your outgoing callsto selected phone numbers if this function issupported by your SIM cardClosed user group—to specify a group ofpeople whom you can call and who can callyou (network service)Security level > Phone—to set the phone toask for the security code whenever a newSIM card is inserted into the phone. If youselect Memory, the phone asks for thesecurity code when the SIM card memory isselected, and you want to change thememory in use.Access codes—to change the security code,PIN code, UPIN code, PIN2 code, or barringpasswordCode in use—to select whether the PIN codeor UPIN code should be activeAuthority certificates or User certificates—toview the list of the authority or usercertificates downloaded into your phone.See “Certificates”, p. 59.Security module settings—to view Securitymodule details, activate Module PIN request,or change the module PIN and signing PIN.See also “Access codes”, p. ix.■ Phone software updatesYour service provider may send phonesoftware updates over the air directly toyour device. This option may not beavailable, depending on your phone.Warning: If you install a softwareupdate, you cannot use the device,even to make emergency calls,until the update is completed andthe device is restarted. Be sure tobackup data before accepting asoftware update.SettingsTo allow or disallow phone softwareupdates, select Menu > Settings >Configuration > Device manager settings >Service prov. sw updates and followingoptions:Always allow—to perform all softwaredownloads and updates automaticallyConfirm first—to perform softwaredownloads and updates only after yourconfirmation (default setting)Always reject—to reject all software updatesDepending on your settings you willbe notified that a software update isavailable for download or has beendownloaded and installed automatically.