Learn how to use screen lock settings on your Sony Xperia Z Ultra. There are several ways to lock the screen on your device. For example, you can use the Face Unlock feature, which uses a picture of your face to unlock the screen. You can also set a screen unlock pattern, a number-based PIN lock, or a text-based password. 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 set up the Face Unlock feature

1. From your Home screen, tap Apps > Settings > Security > Screen lock.
2. Tap Face Unlock, then follow the instructions in your device to capture your face.
3. After your face is successfully captured, tap Continue.
4. Select a backup lock method and follow the instructions in the device to complete the setup.

Note: The Face Unlock feature is less secure than a screen lock pattern, PIN, or password. Someone who looks similar to you could unlock your device.

Note: For best results, capture your face in an indoor area that is well lit but not too bright, and hold the device at eye level.

To unlock the screen using the Face Unlock feature

1. Activate the screen.
2. Look at your device from the same angle you used to capture your Face Unlock photo.

Note: If the Face Unlock feature fails to recognize your face, you need to draw the backup pattern or enter the PIN to unlock the screen.

To disable the Face Unlock protection

1. From your Home screen, tap Apps > Settings > Security > Screen lock.
2. Draw your backup screen unlock pattern or enter your PIN.
3. Tap Swipe.

To create a screen unlock pattern

1. Drag the status bar downwards, then tap Settings icon.
2. Tap Security > Screen lock > Pattern.
3. Follow the instructions in your device.

To unlock the screen using a screen unlock pattern

1. Activate the screen.
2. Draw your screen unlock pattern.

Note: If the unlock pattern you draw on the screen is rejected five times in a row, you must wait 30 seconds and then try again.

To change the screen unlock pattern

1. From your Home screen, tap Apps icon.
2. Find and tap Settings > Security > Screen lock.
3. Draw your screen unlock pattern.
4. Tap Pattern.
5. Follow the instructions in your device.

To disable the screen unlock pattern

1. From your Home screen, tap Apps > Settings > Security > Screen lock.
2. Draw the screen unlock pattern.
3. Tap Swipe.

To create a screen unlock PIN

1. From your Home screen, tap Apps > Settings > Security > Screen lock > PIN.
2. Enter a numeric PIN.
3. If necessary, tap to minimize the keyboard.
4. Tap Continue.
5. Re-enter and confirm your PIN.
6. If necessary, tap to minimize the keyboard.
7. Tap OK.

To disable the screen unlock PIN

1. From your Home screen, tap Apps > Settings > Security > Screen lock.
2. Enter your PIN, then tap Continue.
3. Tap Swipe.

To create a screen lock password

1. From your Home screen, tap Apps > Settings > Security > Screen lock > Password.
2. Enter a password.
3. If necessary, tap to minimize the keyboard.
4. Tap Continue.
5. Re-enter and confirm your password.
6. If necessary, tap to minimize the keyboard.
7. Tap OK.

To disable the screen unlock password

1. From your Home screen, tap Apps > Settings > Security > Screen lock.
2. Enter your password and tap Continue.
3. Tap Swipe.