Black Line on s21 ultra screen

[Tabyyyy]

There is a horizontal line on my s21 ultra, it is prominent when the brightness is low..and it is clearly visible in grey region...

Neither the phone dropped nor the pressure is applied on it..

Anyone please help me solving the problem. 

[Muhammad_Ali]

Buddy this is called screen burn... can be cause of some wallpaper or any other image you let on for a longer period of time on high brightness 🔆...

Claim warranty ASAP... kindly mark this post as a solution...

[Tabyyyy]

I don't think so that its a burn in effect..
But anyways thank you.