To unlock a blocked SIM card using the PUK code
1
Enter the PUK code and tap
.
2
Enter a new PIN code and tap
.
3
Re-enter the new PIN code and tap
.
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
1
From your Homescreen, tap .
2
Find and tap
Settings
>
Display
>
Brightness level
.
3
Drag the slider to adjust the brightness.
Lowering the brightness level increases battery performance.
To Set the Screen to Vibrate on Touch
1
From your Homescreen, tap .
2
Find and tap
Settings
>
Sound & notification
>
Other sounds
.
3
Drag the slider beside
Vibrate on touch
to the right. The screen now vibrates
when you tap soft keys and certain applications.
To adjust the idle time before the screen turns off
1
From your Homescreen, tap .
2
Find and tap
Settings
>
Display
>
Sleep
.
3
Select an option.
To turn off the screen quickly, briefly press the power key .
Screen Pinning
Use screen pinning to set your device to display only the screen for a specific
application. For example, if you are playing a game and you accidentally touch the
Home navigation key, the screen pinning feature prevents the active game app
screen from being minimized. You can also use this feature when you lend your
device to another person to make it harder for them to access more than one
application. For example, you can lend your device to somebody to take a photo and
pin the screen to the Camera application so that the person can't easily use other
apps such as Email.
Screen pinning is not a security feature and does not fully prevent other users from unpinning
a screen and accessing your device. To protect your data, you should set up your device to
request a screen lock PIN, password, or pattern before someone can unpin the screen.
To Activate Screen Pinning
1
From your Homescreen, tap .
2
Find and tap
Settings
>
Security
>
Screen pinning
.
3
Drag the slider to the right.
4
If you haven't set up a pattern, PIN, or password screen lock on your device,
drag the slider beside
Lock device when unpinning
to the right, then select an
option. If you already have a screen lock enabled, then drag the slider to
activate the relevant security option after you activate screen pinning.
A pattern, PIN, or password is not mandatory for screen pinning to work.
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