To download software updates using a USB cable connection
1Install the PC Companion application on the computer you are using, if it is not already installed.
2Connect your device to the computer using a USB cable.
3Computer: Launch the PC Companion application. After a few moments, PC Companion detects your device and searches for new software for it.
4Device: When notifications appear in the status bar, follow the
To update your device using an Apple® Mac® computer
1Install Sony™ Bridge for Mac application on the Apple® Mac® computer you are using, if it is not already installed.
2Using a USB cable, connect your device to the Apple® Mac® computer.
3Computer: Launch Sony™ Bridge for Mac application. After a few moments, Sony™ Bridge for Mac application detects your device and searches for new software for it.
4Computer: If a new software update is detected, a popup window appears. Follow the
Sony™ Bridge for Mac application is downloadable from Bridge for mac.
Resetting your device
You can reset your device to its original settings, with or without deleting all of your personal data. Before you perform a reset, make sure to back up any important data saved on your device.
To perform a factory data reset
To avoid permanent damage to your device, do not restart your device while a reset procedure is underway.
1Drag the status bar downwards, then tap 
.
2Find and tap Backup & reset > Factory data reset.
3If you also want to erase data such as pictures and music, which is saved to your device's internal storage, mark the Erase internal storage checkbox.
4Tap Reset tablet.
5To confirm, tap Erase everything.
Locking and protecting your device
IDID number
Xperia™ Tablet Z has a unique IDID number.
To view your IDID number
Setting a screen lock
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
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