Question Crazy screen iPhone

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Jan 28, 2020
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Hello friends, I have an iPhone XS Max.
He has already taken some falls (use silicone cover and glass film) and never got water.
One day after normal use, he presented a green screen, I didn't know what to do. I verified that the green screen worked on the touch and started to try to change the configuration in something.
For my surprise, when I touched the brightness ló w or reset the screen Back to normal.
does anyone know the explanation and resolution?

attached gif and photo

thanks
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CmgyLnS.jpg


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HwNkLLS.gif
 
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