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To Clear the Application Default Setting
1
From your Homescreen, tap .
2
Find and tap Settings > Apps, then swipe over to the All tab.
3
Select an application or service, then tap CLEAR DEFAULTS.
The option to clear the application default setting is not available for all applications or
services.
Restarting and resetting your device
You can force your device to restart or shut down in situations where 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 have to 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 118.
If your device fails to power 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 tools
.
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 using 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 force your device to restart
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
Press and hold down both the volume up key and the power key for 10 seconds.
2
After the notification light flashes three times, release the keys. The device turns off
automatically.
To perform a factory data reset
To avoid permanent damage to your device, do not restart your device while a reset procedure
is underway.
1
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.
2
From your Homescreen, tap
.
3
Find and tap Settings > Backup & reset > Factory data reset.
4
To delete information, such as pictures and music, from your internal storage,
mark the Erase internal storage checkbox.
5
Tap Reset phone.
6
If required, draw your screen unlock pattern, or enter your screen unlock
password or PIN to continue.
7
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
account login details to perform this operation. By running the repair feature, you reinstall
software for your device and you may lose some personal data in the process.
121
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121


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