Display problem... Samsung please explain this!!!

[PyCoder]

Can someone at Samsung explain this and still claim the S24  has no display issues?

2 shots of the S24 Ultra and 1 of my old S10+

EDIT:

So I made pictures and videos both devices playing the same video with the same settings.
The S24 U gets somehow triggered by this 2023 LG OLED l Color Art 4K HDR 60fps - YouTube and other LG HDR videos (found in another thread).

Also I have the grainyness and three horizontal lines on my display like other people already claimed.

If I turn on eye comfort it's even getting worst, as example the black background in the Samsung browser is suddently greyish, like the video or the black in the App "Display Tester" is greyish.

Neither happens on my old S10+.

So how does Samsung explain that black on a OLED, which means the pixel is off, turns into this grainy mess?

Last shot S24 U vs S10+ both with these settings
Auto brightness --> ON
Eye comfort --> OFF
Adaptive brithness --> ON
Screen mode --> Vivid
Vividness --> Maxed out (updated today)
Screen resolution --> Maxed out
Video brightness --> Bright

Changing the settings doesn't help at all on the S24 U, and thanks to Samsung I can't even return the phone without losing 10%, because I was so stupid to wait for the update that apparently would fix alle display issues according to the Samsung support!!!!

EDIT 3: So the issue is called "mura" and is a hardware issue: https://confit.atlas.jp/guide/event-img/idw2019/OLEDp1-8/public/pdf_archive?type=in 

Edit 4:
Uniformity according to DXOMark.com:
iPhone 15 Pro vs Google Pixel 8 Pro vs Samsung 24 Ultra.

Fun fact all devices use displays from Samsung, guess which phone has the worst display in terms of uniformity? 

[Aeb01]

Like the banding issue many users worldwide face, I am also facing a grainy screen problem.

Samsung's attitude about this issue is disappointing. Many people worldwide write about this problem on forum websites and contact service centers, and we only get "it is normal for AMOLED screens" as an answer.

This is not the first time in our lives we have used AMOLED screens. This is called the Mura effect, and you know it. Moreover, you know this is not normal. There is no such issue on the S23 Ultra or iPhone when you give them the screens.

The Mura effect is not just a problem when we use the phone indoors with dark themes. Watching films/TV series with dark scenes , etc., is disgusting.

This cannot be normal for a phone that claims to have the "best screen ever." Even watching films or using dark themes on the A52s is better.

If Samsung keeps this attitude, they are going to lose many customers.

[Teejaypops]

I just got my S24 Ultra a few days ago and the screen display and resolution has been amazing until I did a Backup Restore from my previous phone, A32 which included Settings as well. Soon as it got Restored, I noticed my display quality dropped drastically and my phone apps icon and general pictures display don't even look/feel sleek anymore. Pls what can I do? Do I wipe the phone to get back to the Default settings of the S24 Ultra?

[Members_zln7Qnm]

The same problem yiu have is the same i had , i got another s24 ultra again n its worse than the first one, when watching a movie it shows grainy colors in dark  areas , i returned it again