The sound that the Apple iPhone camera makes when it takes pictures is loud and annoying. You can silence it though with just a few steps.
Just use the Volume Down button to toggle the phone volume down to the vibrate setting.
Alternately, you can go to Settings > Sounds and slide the Ringer and Alerts setting all the way to the left.
Once this is completed, the camera shutter will not make a sound.
Users who have Jailbreaked their device can turn the sound off forever by renaming the sound file that is played.
1. Download and install iPhoneBrowser.
2. Create a ‘dummy’ file on your computer called photoShutter.caf. Make it using notepad or anything else, it doesn’t matter.
3. Using iPhoneBrowser, navigate to /System/Library/Audio/UISounds.
4. Replace the photoShutter.caf file with the ‘dummy’ file you created.