S e t t i n g sClosed user group — to specify a group of people whomyou can call and who can call you (network service)Security level — Select Phone to request the securitycode whenever a new SIM card is inserted into thephone. Select Memory to request the security codewhen the SIM card memory is selected, and you want tochange the memory in use.Access codes — to change the security code, PIN code,UPIN code, PIN2 code, or barring passwordCode in use — to select whether the PIN code or UPINcode should be activeAuthority certificates or User certificates — to view thelist of the authority or user certificates downloadedinto your phone. See “Certificates,” p. 56.Security module sett. — to view the security moduleRestore settings only — to reset all preference settingswithout deleting any personal dataRestore all — to reset all preference settings and deleteall personal data, such as contacts, messages, mediafiles, and activation keys
