Sony 1261-4174, 1261-4178, 1261-4180, U, XUST25WHYW 124

To change the SIM card PIN2

1From the Home screen, tap .

2Find and tap Settings > Call settings > Fixed Dialing Numbers > Change PIN2.

3Enter the old SIM card PIN2 and tap OK.

4Enter the new SIM card PIN2 and tap OK.

5Confirm the new PIN2 and tap OK.

To unblock a locked SIM card

1When SIM card locked appears, enter the PUK code and tap OK.

2Enter a new PIN code and tap OK.

3Reenter the 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

1From your Home screen, tap > Settings > Location & security > Set up screen lock.

2Select 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

1From the Home screen, tap .

2Find and tap Settings > Location & security > Set up screen lock > Pattern.

3Follow 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

1Activate the screen.

2Drag the lock icon to the right across the screen.

3Draw 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.

To change the screen unlock pattern

1From the Home screen, tap .