● TV screen size — Select the aspect ratio of theTV: Normal or Widescreen for widescreen TVs.● TV system — Select the analogue video signalsystem that is compatible with your TV.● Flicker filter — To improve image quality on thescreen of your TV, select On. The flicker filter maynot diminish image flicker on all TV screens.Security settingsPhone and SIMPress , and select Tools > Settings >General > Security > Phone and SIM card.● PIN code request — When active, the code isrequested each time the device is switched on.Deactivating the PIN code request may not beallowed by some SIM cards.● PIN code, PIN2 code, and Lock code — You canchange the lock code, PIN code, and PIN2 code.These codes can only include the numbers from0 to 9. If you forget any of these codes, contactyour service provider. See "Access codes," p. 16.Avoid using access codes similar to theemergency numbers to prevent accidentaldialling of the emergency number.● Keypad autolock period — Select whether thekeypad is locked when your device has been idlefor a certain period of time.● Phone autolock period — To avoidunauthorised use, you can set a time-out afterwhich the device automatically locks. A lockeddevice cannot be used until the correct lock codeis entered. To turn off the autolock period, selectNone.Tip: To lock the device manually, pressthe power key. A list of commandsopens. Select Lock phone.● Lock keys if slide closed — Select whether thekeypad is locked when you close the 2-way slide.Tip: To lock or unlock the keypadmanually when the slide is closed, pressthe left selection key, then the rightselection key.● Lock if SIM card changed — You can set thedevice to ask for the lock code when an unknownSIM card is inserted into your device. The devicemaintains a list of SIM cards that are recognisedas the owner’s cards.● Closed user group — You can specify a group ofpeople to whom you can call and who can callyou (network service).● Confirm SIM services — You can set the deviceto display confirmation messages when you areusing a SIM card service (network service).145 Settings