To set the device to silence an incoming call or snoozean alarm when you tap the device twice, select Tap tosilence.To set the device to silence an incoming call or snoozean alarm when you turn the device face down, selectTurn to silence.Security settingsAbout security settingsSelect Menu > Control panel > Settings andGeneral > Security.Define the following security settings:• Phone and SIM card — Adjust the security settingsfor your device and SIM card.• Certificate management — Manage your securitycertificates.• Security module — Manage your security module.Avoid using codes that are similar to emergencynumbers to prevent accidental dialling of theemergency number. Codes are shown as asterisks.When you change a code, enter the current code, thenthe new code twice.Device and SIM card securityTo change the PIN code, select Phone and SIM card >PIN code. The new code must be 4 to 8 digits long. ThePIN code protects your SIM card against unauthoriseduse and is provided with the SIM card. After threeconsecutive incorrect PIN code entries, the code isblocked, and you need to use the PUK code to unblockit before you can use the SIM card again.To set the keypad to lock automatically after a definedperiod, select Phone and SIM card > Keypadautolock period.To set a time-out after which the device isautomatically locked and can be used only if the correctlock code is entered, select Phone and SIM card >Phone autolock period. Enter a number for the time-out in minutes, or select None to set off the autolockperiod. When the device is locked, you can still answerincoming calls, and calls may still be possible to theofficial emergency number programmed into yourdevice.To set a new lock code, select Phone and SIM card >Lock code. The preset lock code is 12345. Enter thecurrent code and then the new code twice. The newcode can be 4-255 characters long. Both alphabets anddigits can be used, and both uppercase and lowercasealphabets are possible. The device notifies you if thelock code is not properly formatted.Restore original settingsTo restore the original device settings, select Menu >Control panel > Settings and General > Factorysettings. To do this, you need your device lock code.After resetting, the device may take a longer time toswitch on. Documents, contact information, calendarentries, and files are unaffected.151 Settings© 2009 Nokia. All rights reserved.