139Copyright © 2004 Nokia. All rightsSecurityGo to Security.Phone and SIMYou can change the following codes: lock code, PIN code, and PIN2 code. Thesecodes can only include the numbers from 0 to 9.Avoid using access codes similar to emergency numbers, such as 112, to preventaccidental dialling of the emergency number.PIN code request - When the PIN code request is active, the code is requested eachtime the phone is switched on. Note that some SIM cards may not allow the PINcode request to be deactivated.PIN code/PIN2 code/Lock code - Open this setting if you want to change the code.Autolock period - You can set an autolock period, a time-out after which thephone is automatically locked and can be used only if the correct lock code isentered. Key in a number for the time-out in minutes or select None to turn offthe autolock period.• To unlock the phone, key in the lock code.Lock if SIM changed - Select Yes if you want the phone to prompt for the lock codewhen an unknown, new SIM card is inserted into your phone. The phone maintainsa list of SIM cards that are recognised as the owner’s cards.Options in the Fixed dialling view are: Open, Call, Activ. fixed dialling,Deact. fixed dialling, New contact, Edit, Delete, Add to Contacts, Add fromContacts, Find, Mark/Unmark, Help, and Exit.