uneven screen

So I had some issues with my hinge and got my screen replaced on my 4 month old M1 Air. It's been a month and I noticed there's some backlight unevenness in the bottom third of the display. Somewhat noticable if you look for it on a white screen. I didn't notice it for a month but now it's the...

I know there has been much discussion this year--and other years about the "yellow" color temperature of the iPhone 12 screens. I will start off by saying, yes the screen is much warmer as a whole, but I seem to have another issue. The warm temperature wouldn't be bothersome if it was even. But...