17Copyright © 2006 Nokia. All rights reserved.usually supplied with the SIM card. Set the phone to request the PIN code each time the phone is switchedon.• The PIN2 code (4 to 8 digits) may be supplied with the SIM card and is required for some functions.• The module PIN is required to access the information in the security module. The module PIN is suppliedwith the SIM card if the SIM card has a security module in it.• The signing PIN is required for the digital signature. The signing PIN is supplied with the SIM card if the SIMcard has a security module in it.PUK codesThe personal unblocking key (PUK) code and the universal personal unblocking key (UPUK) code (8 digits) arerequired to change a blocked PIN code and UPIN code, respectively. The PUK2 code is required to change ablocked PIN2 code.If the codes are not supplied with the SIM card, contact your local service provider for the codes.Barring passwordThe barring password (4 digits) is required when using Call barring. See Call barring p. 104. You can obtain thepassword from your service provider.If you enter an incorrect barring password three times in succession, the password is blocked. Contact yourservice provider or network operator.■ Configuration settings serviceBefore you can use multimedia messaging, instant messaging, push to talk, email application, synchronization,streaming, and the browser, you must have the proper configuration settings on your phone. You may receivethe settings directly as a configuration message, which you save to your phone.