Turn iPhone or iPad Screen Into Black & White with Grayscale Mode
The latest versions of iOS support an optional display mode that turns everything shown on the screen of an iPhone or iPad to black and white. Called Grayscale mode, the setting is mostly intended as an accessibility option, but it has other uses beyond that as well.
This tutorial will show you how to turn your iPhone or iPad display into grayscale mode, stripping away all color from the screen. This effectively lets you run your iOS device in black and white. We’ll also show you how to turn off grayscale mode if you no longer want the iOS screen to be black and white, to return your iPhone or iPad display to full color.