How to Fix iPhone Screen Stuck on Black and White
If your iPhone has suddenly turned black and white, it is a simple do-it-yourself fix. The solution I describe in this article will work equally well for iPhones, iPads, and iPods, because it's software, not the physical hardware, that has turned your display black and white.
Why Is My iPhone Black And White?
Your iPhone has changed to black and white because "Grayscale", an accessibility setting that was introduced in iOS 8, has accidentally been turned on. Grayscale mode makes it easier for people with color-blindness and difficulty seeing to use the iPhone.
It's an lifesaver if you have difficulty seeing colors. If you don't, having a black and white iPhone can be frustrating, especially if you don't know how to turn it off.
How Do I Change My iPhone From Black And White To Color?
To change your iPhone back to color, go to Settings > General > Accessibility and tap the slider to the right of Grayscale. Your iPhone will instantly change from black and white to full color. This will most likely resolve your issue. If your iPhone is still black and white, go to Settings > General > Accessibility > Zoom > Zoom Filter and tap None.
Another Setting To Watch Out For
One more setting that may be causing Grayscale to turn on and off without your knowledge. Head back to Settings > General > Accessibility, scroll all the way to the bottom, and tap Accessibility Shortcut.
Accessibility Shortcut is a handy feature that makes it easy to turn accessibility features on and off by triple-clicking the Home button. If any of the features you see listed have checkmarks to the right, it means that you can enable that feature by triple-clicking the Home button.
If Grayscale is checked, tap the checkmark to turn off that accessibility shortcut. That way, you can't accidentally turn Grayscale on or off as you go throughout your day.