you can turn off BlackBerry camera shutter sound with BlackBerry CameraMuteApp on GSM devices. BlackBerry CameraMuteApp was developed by mobileutil.com. it can let you mute the annoying camera shutter sound on BlackBerry GSM devices, so on all non xx30 devices.
How you use the BlackBerry CameraMuteApp:
You launch it via the icon, then press Menu -> Add MenuItem then you go to your camera app.
Now when you want to mute the sound of the shutter you simply click Menu -> Mute! and after you have taken the fotos you click Menu -> Unmute! to turn on the sound again.
After each reboot you have to add the MenuItem to the Menu again.
you can download BlackBerry CameraMuteApp from http://mobileutil.com/applications/download/5/
Please don’t to any weird things with the turned off BlackBerry camera sound.