My phone has lost all color. Everything is black and white. Grayscale is off. What else could it be?

I

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My iPhone screen just went to black and white. I have no color and my grayscale is not on. What could be causing this.
 

Larry Cook1

Well-known member
Sep 3, 2014
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Hold the power button and home button at the same time until you see the Apple logo. The phone will reboot and probably fix the issue.