To enable touch tones
1From your Home screen, tap 
.
2Find and tap Settings > Sound.
3Mark the Dial pad touch tones and Touch sounds checkboxes.
SIM card protection
You can lock and unlock each SIM card that you use in your device with a PIN (Personal Identity Number). When a SIM card is locked, the subscription linked to the card is protected against misuse, meaning that you have to enter a PIN every time you start your device.
If you enter the PIN incorrectly more times than the maximum number of attempts allowed, your SIM card will become blocked. You then need to enter your PUK (Personal Unblocking Key) and a new PIN. Your PIN and PUK are supplied by your network operator.
To lock or unlock a SIM card
1From the Home screen, tap 
.
2Find and tap Settings > Security > Set up SIM card lock.
3Mark or unmark the Lock SIM card checkbox.
4Enter the SIM card PIN and tap OK.
To change the SIM card PIN
1From the Home screen, tap 
.
2Find and tap Settings > Security > Set up SIM card lock.
3Tap Change SIM PIN.
4Enter the old SIM card PIN and tap OK.
5Enter the new SIM card PIN and tap OK.
6
To unlock a blocked SIM card using the PUK code
1Enter the PUK code and tap 
.
2Enter a new PIN code and tap 
.
3
.
If you enter an incorrect PUK code too many times, you need to contact your network operator to get a new SIM card.
Screen settings
To adjust the screen brightness
1From your Home screen, tap 
.
2Find and tap Settings > Display > Brightness.
3Unmark the Adapt to lighting conditions checkbox if it is marked.
4Drag the slider to adjust the brightness.
Lowering the brightness level increases battery performance.
To set the screen to vibrate on touch
1From your Home screen, tap 
.
2Find and tap Settings> Sound.
3Mark the Vibrate on touch checkbox. The screen now vibrates when you tap soft keys and certain applications.
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