2Scroll to Keypad Lock Setting and press 
.
3Scroll to Timed and press 
.
4Scroll to 2 Seconds, 4 Seconds, or 8 Seconds, and press 
.
The keypad will be locked whenever it is at the home screen and no keys are pressed for the period of time you selected. To unlock the phone, enter the
Lock side keys & external buttons
Note: When you lock the side keys, you can still use the volume keys to dismiss an incoming call.
When your phone’s flip is closed, you can lock the phone’s side keys (see page 1) and external control buttons. This prevents you from accidentally changing the Master Volume setting with the volume keys, muting your phone, turning on Bluetooth® power, or activating the music player.
To lock the side keys and external |
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control buttons, press and hold the |
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smart/speakerphone key on the left |
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side of the phone. |
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If you press a locked side key when |
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flip is closed, you see the 0 |
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indicator. If you open the flip, the side keys are unlocked and can be used as normal.
To unlock the side keys and external control buttons, press and hold the smart/speakerphone key, then press the volume keys up or down.
Lock applications
Find it: 
> u Settings > Phone > Security
1When prompted, enter the
2Scroll to Restrictions and press 
.
3Scroll to the desired application and press 
: Calls,
Messages, Location, Browser.
Change codes
Your phone’s
If your service provider didn’t change the unlock code, you should change it to prevent unauthorized use of your phone. The unlock code must contain four digits.
To change the unlock code:
1When prompted, enter the
12Basics