Is your Xperia having issues? Try repairing it with Sony's PC Companion or Sony's Update Service first before posting.
Remember to back up your data before proceeding and do internal wipes [factory reset under settings] as well.
Use the latest FlashTool to flash FTF files if PCC and SUS fails to recognize/repair your Xperia. Full tutorial on how to use FlashTool.
If you’ve ever entered apassword on your mobile device, you’ve surely … more
26 Aug 2014
By Tomek Kondrat
XDA Developers was founded by developers, for developers. It is now a valuable resource for people who want to make the most of their mobile devices, from customizing the look and feel to adding new functionality. Are you a developer?