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your PUK (Personal Unblocking Key) and then a new PIN. Your PIN, PIN2, and PUK
are supplied by your service provider.
To enable the SIM card PIN lock
1 From the Home screen, tap . .
2 Find and tap Settings > Security > Set up SIM card lock.
3 Tap Lock SIM card.
4 Enter the SIM card PIN and tap OK.
To change the SIM card PIN
1 From the Home screen, tap . .
2 Find and tap Settings > Security > Set up SIM card lock.
3 Tap Change SIM PIN.
4 Enter the old SIM card PIN and tap OK.
5 Enter the new SIM card PIN and tap OK.
6 Retype the new SIM card PIN and tap OK.
To change the SIM card PIN2
1 From the Home screen, tap .
2 Find and tap Settings > Call settings
3 Tap Fixed dialing numbers > Change PIN2.
4 Enter the old SIM card PIN2 and tap OK.
5 Enter the new SIM card PIN2 and tap OK.
6 Confirm the new PIN2 and tap OK.
To unblock a locked SIM card
1 When Enter PUK and new PIN code appears, enter the PUK code.
2 Enter a new PIN code and tap OK.
If you enter an incorrect PUK code too many times, the SIM card becomes blocked. If this
happens, contact your service provider to get a new SIM card.
Setting a screen lock
To set a screen lock
1 From your Home screen, tap > Settings > Security > Screen lock.
2 Select an option.
It is very important that you remember your screen unlock pattern, PIN or password. If you
forget this information, it may not be possible to restore important data such as contacts and
messages. Refer to Sony Customer support for more information.
To create a screen unlock pattern
1 From the Home screen, tap .
2 Find and tap Settings > Security > Screen lock > Pattern.
3 Follow the instructions in your phone. You are asked to select a security
question that will be used to unlock the phone if you forget your screen unlock
pattern.
To unlock the screen using a screen unlock pattern
1 Activate the screen.
2 Draw your screen unlock pattern.
If the unlock pattern you draw on the screen is rejected five times in a row, you can select to
either wait 30 seconds and then try again, or to answer the security question you have
selected.
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