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Identify installed software and provide useful details about your device.
The Xperia™ Diagnostics application is pre-installed on most Android™ devices from Sony. If
the Diagnostics option is not available under Settings > About phone, you can download a
light version using the Play Store™ application.
To run a specific diagnostic test
1
From your Home screen , tap .
2
Find and tap Settings > About phone > Diagnostics > Test.
3
Select a test from the list.
4
Follow the instructions and tap Yes or No to confirm whether a feature works.
To run all diagnostic tests
1
From your Home screen , tap
.
2
Find and tap Settings > About phone > Diagnostics > Test > Run all.
3
Follow the instructions and tap Yes or No to confirm whether a feature works.
To view details about your device
1
From your Home screen , tap
.
2
Find and tap Settings > About phone > Diagnostics > Facts.
Restarting and resetting your device
You can force your device to restart or shut down if it stops responding or won't
restart normally. No settings or personal data get deleted.
You can also reset your device to its original factory settings. This action is
sometimes necessary if your device stops functioning properly, but note that if you
want to keep any important data, you should first back up this data to a memory card
or other non-internal memory. For more information, see
Backing up and restoring
content
on page 126.
If your device fails to turn on or you want to reset your device’s software, you can use
Xperia™ Companion to repair your device. For more information on using Xperia™
Companion, see
Computer tool
on page 122.
Your device may fail to restart if the battery level is low. Connect your device to a charger and
try restarting again.
If you are sharing a device with multiple users, you may need to log in as the owner, that is,
the primary user, to reset your device to its original factory settings.
To restart your device
1
Press and hold down the power key .
2
In the menu that opens, tap Restart. The device restarts automatically.
To force the device to restart or shut down
1
Press and hold down the power key and the volume up key at the same time
for 10 seconds.
2
Your device vibrates once. Depending on whether you wish to force the device
to restart or shut down, proceed as follows.
If you wish to force restart the device: Release the keys at this point. The
device restarts.
If you wish to force shut down the device: Continue pressing the keys. After
a few more seconds, the device vibrates three times and turns off.
129
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129


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