I’ve just found my S9+ screen turning to be green tint color after update latest firmware on 22 Nov.
I quite believe it not cause from hardware but come from the error of latest firmware as found many users found at the same problem in Thailand club.
So, what should I do with this problem. I’m very disappointed with Samsung mobile phone.
Quick, check out the thread "S9 Plus Screen Flickering, Green Tint/Bars, Black Screen Issue " and follow the instructions there on how to stabilize the phone before your phone goes all the way black. Thats what happened to me at least