Note 9 overheating and discolouration

[ThushanLeo]

My note 9 , overheating and after that getting yellow discoloured.. I searched in Google and  reason is software update issue,  

[Dineth_Hesara]

The March 2020 security update released for the Galaxy Note 9 causing a lot of issues, ranging from screen discoloration (yellow screen tint) to decreased resolution and overheating were reported later by many users so that they released a stable update fixing this software glitch (last update - OneUi 2.5).

It should be fixed...if not help,
https://www.getdroidtips.com/galaxy-note-9-screen-discoloring-issue/#How-to-fix-the-Screen-Discolour...

Or try,

https://play.google.com/store/apps/details?id=com.zoox.deadpixelfix

https://play.google.com/store/apps/details?id=appinventor.ai_avaworks00.LCDBurnInWiper

Or Contact Service Center

Or check for Hardware Issues.