DanishbluntYes yes i know that It will require a modder for kernel stuff as someone did with Pixel 4 devices. Some smartphone producers had and still have a this issues , as you said some have more and some have less, i already knew this kind of stuff about others, but unluckily not for Asus. To be honest it's not so bad my "Issue" so ill'try to live with It as i said before.
As mentioned, its only neccesary to hire a modder for this type of work if the panel does bother you to the point where you cannot live with it.
Well calibrating an LCD panel with a spyder is nothing compared to calibrating OLED screens as you now know. Now that you know that it's rather common on OLED phones I think your mind is now at ease.
Here are some Samsung phones with the same issue:
I think you can now understand that it is indeed related to OLED and that nothing is wrong with your panel, it's just the typical calibration problems with OLED screens. Some have slightly less, others have slightly more tint, it will depend on panel lottery but in the end, all will have tint.
CVonCBest way is to make sure its in a dark enviroment, such as nighttime. Then play something at roughlu 0 - 20% brightness that has lots of grey in it, maybe something like batman trailer 2021 on youtube or just a grey background image.
I've never experienced (or noticed) this green tint thing on my ZenFone 7 Pro. Is there a sure fire way of testing to see if it happens?