1. Create a file called "local.prop" in /data/ if it doesn't exist. Example: "/data/local.prop" 2. Open the file "/data/local.prop" 3. add the line to the file: ro.camera.sound.forced=0 4. Reboot and all sound in the camera app is completely silent. 5. To recover the sound, you can either delete the local.prop file or change the code to: ro.camera.sound.forced=1