19. SecurityDevice securitySelect Menu > Tools > Settings > Security > Phone and SIM.You can modify the security settings for the PIN code, automatic lock, and SIM card change, and change codes and passwords.Avoid using codes that are similar to emergency numbers to prevent accidental dialing of the emergency number.Codes are shown as asterisks. When you change a code, enter the current code, then the new code twice.Define security settingsTo define device and SIM card settings, select a setting and Options > Change.When calls are limited to closed user groups, calls may be possible to the official emergency number programmed into yourdevice.Define the following settings:• PIN code request — Select On to request that the PIN code is entered each time the device is switched on. This setting cannotbe changed if the device is switched off. Some SIM cards do not allow turning off the PIN code request.• PIN code — Change the PIN code. The PIN code must be 4 to 8 numbers long. The PIN code protects your SIM card againstunauthorized use and is provided with the SIM card. After three consecutive incorrect PIN code entries, the PIN code is blocked,and you need to use the PUK code to unblock it before you can use the SIM card again.• PIN2 code — Change the PIN2 code. The PIN2 code must be 4 to 8 numbers long. The PIN2 code is required to access somefunctions of the device and is provided with the SIM card. After three consecutive incorrect PIN2 code entries, the PIN2 codeis blocked, and you need to use the PUK2 code to unblock it before you can use the SIM card again.• Autolock period — Set a time-out after which the device is automatically locked and can be used only if the correct lock codeis entered. Enter a number for the time-out in minutes, or select None to turn off the autolock period. When the device islocked, you can still answer incoming calls and calls may still be possible to the official emergency number programmed intoyour device.• Lock code — Change the lock code. The new code can be 4-255 characters long. Both alphabets and digits can be used, andboth uppercase and lowercase alphabets are possible. The device notifies you if the lock code is not properly formatted. Thepreset code is 12345. To avoid unauthorized use of your device, change the lock code. Keep the new code secret and in a safeplace separate from your device.• Lock if SIM changed — Set the device to ask for the lock code when an unknown, new SIM card is inserted into your device.The device maintains a list of SIM cards that are recognized as the owner’s cards.• Allow remote lock — If you set this option on, you can lock the device by sending a predefined text message from anotherphone. When you set this option on, you need to enter the remote lock message and confirm the message. The messagemust be at least 5 characters long. The maximum number of characters allowed is 8. Using more than 8 characters couldprevent unlocking the memory card and require reformatting it. If reformatting the memory card is required, all informationon the card will be lost.• Closed user group (network service) — Specify a group of people to whom you can call and who can call you.• Confirm SIM services (network service) — Set the device to display confirmation messages when you are using a SIM cardservice.Change the barring passwordTo change the password used for barring voice, fax, and data calls, select Menu > Tools > Settings > Call barring > Cellularcall barring > Options > Edit barrings passw.. Enter the current code, then the new code twice. The barring password must befour digits long. For details, contact your service provider.Fixed dialingWhen fixed dialing is activated, calls may be possible to the official emergency number programmed into your device.Press the contacts key. Select Options > SIM contacts > Fixed dialling contacts.With the fixed dialing service, you can restrict calls from your device to only certain phone numbers. Not all SIM cards supportthe fixed dialing service. Contact your service provider for more information.Select Options, and select from the following options:• Activ. fixed dialling — Restrict calls from your device. To cancel the service, select Deact. fixed dialling. You need your PIN2code to activate and deactivate fixed dialing or edit your fixed dialing contacts. Contact your service provider if you do nothave the code.• New SIM contact — Add a phone number to the list of numbers to which calls are allowed. Enter the contact name and phonenumber. To restrict calls by a country prefix, enter the country prefix in New SIM contact. All phone numbers to which callsare allowed must start with this country prefix.© 2007 Nokia. All rights reserved. 87