required to change a blocked PIN codeor PIN2 code, respectively. If the codesare not supplied with the SIM card,contact the network service providerwhose SIM card is in your device.UPUK code — This code (8 digits) isrequired to change a blocked UPIN code.If the code is not supplied with the USIMcard, contact the network serviceprovider whose USIM card is in yourdevice.International Mobile EquipmentIdentity (IMEI) number — This number(15 or 17 digits) is used to identify validdevices on the GSM network. Devicesthat are, for example, stolen, can beblocked from accessing the network.The IMEI number for your device can befound under the battery.Basic useLearn how to use the basic features ofyour device.Home screenLearn how to use and personalise yourhome screen, and organise the contentto your liking.Home screenThe home screen is your starting pointwhere you can collect all your importantcontacts and application shortcuts.When you have switched on the device,and it is registered to a network, thedevice is in the home screen view.Use the scroll key to navigate in thehome screen.The home screen consists of thefollowing:1 Contacts bar2 Application plug-ins3 Application shortcutsTo customise application plug-ins andshortcuts, or to change the home screenBasic use 21© 2010 Nokia. All rights reserved.