How do i turn off the camera shutter? When i use the mute button it doesnt work.

In some countries they do not allow the shutter sound to be muted. This is so that people around you know that someone is taking a picture and helps protect their privacy. Check with your local laws to see if that is the case for your country or specific location.

Hi. My iPhone 5s is from Korea. I know that iPhone that comes from this country doesn't have option to remove the shutter sound. However, this phone is originally from my cousin who lives in Korea. Now, he decided to gave it to me. Is there an option for me to remove it since I live in Philippines and not in Korea?