How Do I fix this Gray shade blocky when in dark mode any tips

[KarlEverest400]

Problem on my A71

[Cefiro]

Sorry I can't see the blocky stairs, as you described it, in your screenshot. You need to visit a SAMSUNG STORE and show them your phone screen. Better, go to SAMSUNG SERVICE CENTER in or nearest your area.

[Cefiro]

Meantime, perhaps you can REDUCE your display resolution, and check if your display setting is under VIVID, then change this to NATURAL.