How to change iPhone screen to gray scale display

Thai people are on the period of the greatest loss and despair.
Since now we are in sorrow and tears are in our faces, we can be in mourning in different ways.This article will show how to change your iPhone with #iOS10 screen to grayscale tone.

1. First go to setting > Accessibility

2. Under the Vision > Display Accommodations

3. Select Color Filters > Grayscale

4. Done! now you can see the world in Grayscale.