Got my iPhone 12 roughly 2 weeks ago and did notice the overly warm display in comparison to previous iPhone’s. Which wasn’t very appealing.
In regards to raised blacks, they’re definitely there on low brightness. I compared my 12 to my brothers iPhone 12 who recieved his a couple days ago, and there is a clear difference...his has no raised blacks at any brightness whatsoever. Which is very bizarre. I was certain after reading almost every post in this forum that every iPhone is affected by this, but maybe not.
I did the test using the video posted here and the plain black iPhone wallpaper, the results were the same.
This lead me to contact Apple support, who remain oblivious to the issue till this day, and declined reading any forums when I told them. They advised it could be a ‘bug’ and to factory reset my phone and try, which I have and the issue persists. It’s past my 14 days to return however, seen as though I have an identical iPhone to mine which doesn’t have raised blacks im hoping to atleast get a replacement.
I will keep you all updated, will contact Apple support again today.
Check this post out from another thread. Seems like there are different type of screens installed on our phones depending on the supplier. Some are better than others. It's weird though that it seems that the majority of the phones come with the worse quality ones.
Meantime, I finally got my replacement phone and will be testing tonight for raised blacks.