Screen getting a gray hue

When even I use a wired headset the screen will randomly get a faded grayish color andake it hard to see the screen I have to power don't the device and remove the battery for a little and turn it on again the long I wait to do this the worse the gray gets until I restart it is an LG g stylo h634 and ideas what could be the problem????

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I get this same problem on my LG Stylo 2 Plus. The first couple of years I had it it only happened in the cold and went away quickly with just a simple restart, but now it constantly happens any time I have my screen turned off and my phone sideways in my pocket. At first leaving it under My leg for a few minutes made it go away but now it takes up to 30 minutes to go away even if I remove my battery

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