Slide two fingers down the display starting from the top edge of your mobile phone.
Tap Settings.

Tap Xperia™ Connectivity.

Tap USB Connectivity.

Tap USB connection mode.

Tap Media transfer mode (MTP).

Tap OK.

Tap the home icon to return to the home screen.

Open the cover on the left side of your mobile phone.

Connect the data cable to the phone phone socket and to your computer's USB port.

Start a file manager on your computer.

Go to the required folder in your computer's or mobile phone's file system.

Highlight a file and move or copy it to the required location.