Screen burn in issue cant be solved with an update. Its an hardware issue my friend. Pixels of that region die/burn due to excess usage of same content. I have a S21 FE Exynos variant and it has same issue... if u open something with white color.. then u can observe light/dim spots of instagram tabs and navigation bar buttons. I went to Samsung's authorised service centre and they told me that screen will have to be replaced but as my phone has completed over 1 year after purchase.. so i would have to pay for it. Cost of screen replacement they qouted was around ₹11000-₹12000 so i decided to use it till it lasts... i use dark wallpaper and darkmode and frankly its not visible until u open something with light colors such as white. Although i told service executive that if a screen burn is occuring in 1 year then the screen is not upto the quality mark. I got to know about burn in late when i factory reset it... it must have been there from 2 months
My friend screen burn in issue in general are not temporary. Mostly they are permanent.... if u think it is a software glitch then u can wait for further updates or maybe go to service centre... they will rectify it.... but most probably they will tell u to replace screen.
If screen burn in was a software issue then try taking a screenshot and sending it to other phone... u wont see those dead pixels in other phone... bcuz its a hardware issue... i hope u understood now.🙂
As per your query, we request you kindly visit the service center for a physical inspection of your device. So that they can check the exact issue with the device and fix it at the earliest. You can locate your nearest service center with this given link: https://www.samsung.com/in/support/service-center/
