Use Oreo Colorizer Download It On Apk Mirror I've Had The Same Issues As You All Using Xiaomi Redmi Note 11 Pro 5G It's A Software Issue As That Uneven Blacks And Whites Are Not Present On MIUI Boot Up Screen. If you use oreo Colorizer will temporarily fix your issue till miui fixes it with software update. Use Oreo Colorizer If you do not play games as it somehow sacrifices fps when playing battery backup might drain a bit as well based on self usage of the app. give it a try and use it if you want to preserve your screen.