I have HTC One M9 with latest Android Lollipop Android firmware version. One of the most annoying in the phone is camera shutter sound. I want to completely turn off the camera click sound and take photos silently, at least selfies. I know it's illegal to turn off camera shutter sound in USA. I want to use the camera silently for selfies.
I tried to find many possible ways in camera setting and device settings, there is no shutter sound ON/OFF option anywhere. Help appreciated.