I have purchased the Galaxy Tab S11 Ultra and it has this nasty grainy effect when at low brightness. It is absolutely bothersome under 10%, it is visible but not bothersome at 10-20% and invisible after 20% except for dark grey colors.
Is it normal? Will it be replaced under warranty? I have heard mixed opinions about this mura effect being replaced under warranty, some people recieving multiple replacements (after faulty replacements), and some being rejected as the effect is deemed "normal". It is completely unacceptable that a flaghip device be deemed normal with such display artifacts
That's strange on mine it's crystal clear 
