Do you have sony xperia U? then you can root your phone by the following methods. Before you begin to root your phone you have to take a backup of your memory card and contacts. Rooting makes your phone will void the warranty. For the rooting you have the windows based PC.
Steps to root Sony Xperia U:

· Download root package and archive on to your desktop.

· Unzip files from the archive to your desktop.

· Turn on the USB debugging option on your device.

· Connect your device to your PC using the USB cable.

· Open the file Runme.bat that you extracted earlier to your desktop.

· When it asks you to choose the mode select normal mode.

· Select root option in the tool and it will begin your device.

· Once rooting done reboot the device.

Your Xperia U has been successfully rooted and you should be able to see the Superuser app right in your App Drawer. Now you can head to Google Play to download and install those lucrative root-only apps!

Disclaimer: if anything happen wrong on your phone while rooting we are not responsible. Rooting of phone make your device will not get warranty. Try rooting at your own risk. Not use the above procedure to root the other models.