Default Proximity problem

Hi everyone...
My proximity aren't accurate...
Sometimes after I make a call,the device screen are not shown up and i force to restart (voice messages,that's why the call can't be end )
I tried terminal to calibrate.however it failed, cuz the directory of proximity_sensor are different located...
Can someone tell me there's any ways I can find my proximity sensor directory or calibrate?
(I believe is not rom problem, tried cm10 and mokee )
I think it's the screen protector problem

sent from my Moto G XT1033 using tapatalk