MTK6589 i9500 Air Gesture Model – Trouble. Help plz

Dear forum friends and experts,

My MTK6589 I9500 1GB/4GB model with display 1280×720, air gesture has some problems now. I rooted it and removed some chinese applications. Then I noticed that there is no swipe unlock sound while unlocking it. But lock sound is working. Once switch off the phone and first time the unlock sound is coming. But later on it is not. How can I resolve this issue?

Please help me

thanks

SHIJO