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Hint
Your device does not revert to an earlier software version of Android when you perform a
factory data reset.
Repairing the device software
You can use Xperia Companion to repair your device's software. 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.
If your device seems to have frozen, restarts repeatedly or doesn't start at all after
you've updated the Xperia software or after you've performed a software repair or
a factory data reset, try forcing the device to shut down then try turning it back on.
If the problem still exists, force the device to shut down then perform a software
repair.
Hint
When you receive a new Google account username or password, you might not be able to
use them to log in.
To repair the device software using Xperia Companion
Note
Before performing a software repair, make sure you know your Google account username
and password. Depending on your security settings, you may need to enter them in order to
restart the device after a software repair.
1
Make sure that Xperia Companion is installed on the computer.
2
Open the Xperia Companion software on the computer and click Software repair
on the main screen.
3
Follow the instructions that appear on the screen to reinstall the software and
complete the repair.
Improving memory performance
Your device has several different storage and memory options:
•
The internal storage stores downloaded or transferred content along with personal
settings and data.
•
To get more free internal storage space, you can use a removable memory card or
Google service to store your data.
Note
•
You can purchase a memory card separately.
•
The dynamic memory (RAM) cannot be used for storage. RAM is used to handle running
applications and the operating system.
Your device memory tends to fill up as a result of normal usage. If the device starts
to slow down, or applications suddenly shut down, you should consider the
following:
•
Close running applications that you are not using.
•
Clear the cache memory for all applications.
•
Uninstall downloaded applications that you don't use.
•
Transfer photos, videos, and music from the internal memory to the memory card.
•
If your device can't read content on the memory card, you may need to format the
card. Note that when you format the card, all content is erased.
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