2-was it like this before an update or something that you have recently installed? back track
3-perform a repair through sony pc companion or sony update service
SONY VAIO Z
SONY XPERIA Z
SONY XPERIA TABLET Z2
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.
Despite introducing many useful features and overall great performance and enhancements,Android 4.4 KitKat … more
01 Sep 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?