i dont have the same issue with you mate but my screen gets dimmer and faded in low brightness which is very annoying cause you can not see clearly dark images. When I went to an apple store they told me that every iphone screen is different if you compare it with another. No matter what, the quality of the screen is far more less than the expectations you have after paying 1000pounds for a phone.
For sure. I’m sure you can understand the frustration though when every other iPhone X I’ve seen does not have that issue