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Restarting, resetting and repairing
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
content on page 45.
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™
Xperia™ Companion on page 43.
Companion, see
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
Your device may fail to restart if the battery level is low. Connect your device to a charger and
try restarting again.
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 shut down
1
Open the cover for the nano SIM card and memory card slot.
2
Using the tip of a pen or a similar object, press and hold down the OFF button
for a few seconds.
3
After your device emits a series of three quick vibrations, release the OFF
button. The device turns off automatically.
Do not use overly sharp objects that could damage the OFF button.
To perform a factory data reset
Before you start, make sure to back up any important data that is saved on the internal
memory of your device to a memory card or other non-internal memory. Factory data reset will
erase all data from your device's internal storage, and you will not be able to access the files
on any of your encrypted SD cards again.
To avoid permanent damage to your device, do not restart your device while a reset procedure
is underway.
1
From your Home screen, tap
2
Find and tap Settings > Backup & reset > Factory data reset.
3
Tap Reset phone.
4
If required, draw your screen unlock pattern or enter your screen unlock
password or PIN to continue.
5
To confirm, tap Erase everything.
Your device does not revert to an earlier software version of Android™ when you perform a
factory data reset.
If you forget your screen unlock password, PIN or pattern, you can use the device repair
feature in Xperia™ Companion to erase the security layer. You need to provide your Google
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.
.
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Backing up and restoring
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