How does the Nubian Z9 mini camera sound close? Z9 Mini camera Sound Off tutorial

First, we in the Nubian Z9mini desktop click "Camera" Map village, and then open into the album settings to go to the following figure:

Second, in the Nubian Z9mini mobile Phone album interface, we click on the upper left corner of the "Gear mark", click on the following figure:

Three, then in a pop-up layer, you will see a lot of options, we click on the "Shutter sound" click can be closed, the following figure:

Okay, so I'm going to try it again. Is there no sound, very simple hope that you have help, of course, there are more ways to close the camera sound.