Originally Posted by suhas_das
I have successfully done the following in my Samsung Galaxy S2 phone. Not checked in other Android phone models. You guys can give a try.
How to Disable Camera Sound in Samsung Galaxy S2
To use this method you need to create an empty file named local.prop and add a line ro.camera.sound.forced = 0 into it.
You can do this in notepad from your computer and simply paste the code given below into it i.e
ro.camera.sound.forced = 0
Now you need to save the file as local.prop and please don't save it as local.prop.txt.
Now simply transfer this file to your galaxy s2 phone to the location <phone>/data/.
Simply reboot your phone put your phone on silent mode and now if you click a picture using your phone there will be no shutter sound to disturb you.
To restore the sound simply delete the file and reboot your phone.
method didn't seem to work for me. I still get the shutter sound while phone is on mute (using S2 as well). Thanks for the tip anyway!