D e v i c e s e c u r i t yNokia 6020 User Guide 23 Copyright © 2005 Nokia6. Device security■ Lock the keypad (keyguard)You can lock the keypad to prevent accidental key presses. To answer a call withkeyguard on, press Call. During the call, all features function as normal. Whenyou end or reject a call, the keypad automatically relocks.• To lock the keypad, select Menu > *.• To unlock the keypad, select Unlock > *.When the keypad is locked, calls may be possible to the official emergencynumber programmed into your device.■ Automatic keyguardYou can set your device to automatically lock the keys after a time you specify.See "Device settings," page 42 to activate this feature.■ Access codesThe following access codes allow you to secure your device from unauthorizeduse. To change access codes, see "Security settings," page 46. Keep the new codessecret and in a safe place, separate from your device.Security code—This code, supplied with the device, protects your device againstunauthorized use. The preset code is 12345.PIN code—This code, supplied with the SIM card, protects the card againstunauthorized use. Turn the PIN code request on so that the code is requestedeach time the device is switched on. If you enter an incorrect PIN code threetimes in succession, the SIM card is blocked. You must enter the PUK code tounblock the SIM card and set a new PIN code.PIN2 code—This code is supplied with some SIM cards and is required to accesscertain services, such as charging unit counters. If you enter an incorrect PIN2code three times in succession, PIN2 code blocked appears in the display and youwill be asked for the PUK2 code.PUK code and PUK2 code—These unblocking codes may be supplied with the SIMcard. For more information, contact your service provider.Call restrictions password (4 digits)—This password is needed when using Callrestrictions. You can obtain the password from your service provider.Wallet code (4 to 10 digits)—The wallet code is required to access the walletservices. For further information, see "Wallet," page 55.