Yeah, for those who think it is so easy, it is not. My LG Optimus G (Sprint) has NO option to disable it. It sounds, loudly, in ALL volume settings (including vibrate only, and full silent), sounds even with headphones plugged in, and while finger over the speaker muffles it well, it is still pretty damned loud. The only option in camera app is to change the sound, but not to disable it. Short of rooting it, that is. I also just tried Enforced Stream Silencer, no effect, again in any volume mode. But, it does seem that using other apps works. I am now trying Silent Camera, which has good reviews, but also is crashing like crazy (when trying different shooting modes) and requires full phone reboot after.