So if you like to spy on girls and take up-skirt pictures, you probably don’t want to be embarrassed by your Android camera shutter sound going off.
You have to make sure if the device sound is off before every shot like that, which takes time and the object may be gone. So it’s better to just turn off the sound once and for all. In Android, go to this folder
system/media/audio/ui
and delete or rename these files
camera_click.ogg
camera_shutter.ogg
You may also delete this file to disable video camera sound
VideoRecord.ogg
Now the only thing you have to remember is turn off the flash before taking upskirt pictures of unknown girls.