G e n e r a l i n f o r m a t i o n12The PIN2 code (4 to 8 digits) may be supplied with the SmartChip and is requiredfor some functions.The module PIN is required to access the information in the security module.See “Security module,” p. 50.The signing PIN is required for the digital signature. See “Digital signature,” p. 52.PUK codesThe personal unblocking key (PUK) code and the universal personal unblocking key(UPUK) code (8 digits) is required to change a blocked PIN code and UPIN code,respectively. The PUK2 code (8 digits) is required to change a blocked PIN2 code.If the codes are not supplied with the SmartChip, contact your local serviceprovider for the codes.Restriction passwordThe restriction password (4 digits) is required when using Call restrictions.See “Security,” p. 74.■ Configuration settings serviceTo use some of the network services, such as mobile internet services, MMS, NokiaXpress audio messaging, or remote internet server synchronization, your phoneneeds the correct configuration settings. You may be able to receive the settingsdirectly as a configuration message. After receiving the settings, you need to savethem on your phone. The service provider may provide a PIN that is needed to savethe settings. For more information on availability, contact your service provider,nearest authorized Nokia dealer, or visit the support area on the Nokia Web site,www.nokiausa.com/support.When you receive a configuration message, Configuration sett. received is displayed.