How to turn iphone shutter sound off?

I recently just got a iPhone 5 from Amazon and I can't seem to turn off my shutter sound. I put all the volumes on silent and nothing. Is it just my phone or does that happen to everyone. Should I exchange it for a new one?

On the top left of the iPhone (on its side), there should be a switch. Switching it will turn it on/off. Hope this helps. 8-)