To clear the cache memory for all applications
1From your Home screen, tap .
2Find and tap Settings > Storage.
3Tap Cached data > OK.
When you clear the cache memory, you don't lose any important information or settings.
To transfer media files to the memory card
1Make sure you have a memory card inserted in your device.
2From your Home screen, tap .
3Find and tap Settings > Storage > Transfer data to SD card.
4Mark the file types that you want to transfer to the memory card.
5Tap Transfer.
To stop applications and services from running
1From your Home screen, tap .
2Find and tap Settings > Apps > Running.
3Select an application or service, then tap Stop.
To format the memory card
1From your Home screen, tap .
2Find and tap Settings > Storage > Erase SD card.
3To confirm, tap Erase SD card > Erase everything
All content on the memory card gets erased when you format it. Make sure you make backups
of all data that you want to save before formatting the memory card. To back up your content,
you can copy it to a computer. For more information, see
Connecting your device to a
computer
on page 97.

Backing up and restoring content

Generally, you should not save photos, videos and other personal content solely on
the internal memory of your device. If something should happen with the hardware, or
if your device is lost or stolen, the data stored on its internal memory is gone forever.
It is recommended to use the PC Companion or the Sony™ Bridge for Mac
applications to make backups which save your data safely to a computer, that is, an
external device. This method is especially recommended if you are updating your
device software from one version to another.
Once your data is safely backed up to a computer, you can also make a quick
backup of basic settings and data to the SD card in your device or to an external
USB storage device by using the Backup and restore application. This backup
method is useful, for example, if you are doing a factory data reset and are not
updating the software version.

Backing up data to a computer

Use the PC Companion application or the Sony™ Bridge for Mac application to back
up data from your device to a PC or an Apple® Mac® computer. These backup
applications let you back up the following types of data:
Contacts and call logs
Text messages
Settings
Media files
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