Hello All, I have recently upgraded my xperia z1 handset with recent firmware release build number 14.2.A.1.136. But it has lots of bugs. Decrease in volume, while making the call delay in screen on due to sensor issue, When we keep checking the any application or playing the games sudden close of application. Is there any possibilities of fixing this bugs or releasing of new build number for 4.3 version? Also, please let me know the release date of 4.4 kitkat version in India.