The screen on my note 9 went dead today after someone called when it was plugged in, then after some restarting, it was very dark, then after leaving it sit for a few hours powered off, it did come back on, but if the brightness went over 50%, it would flicker, look extremely faded, and become unresponsive. Now it usually is a dark, green display, occasionally a bright, green flash then it looks close to how it was before but the top and bottom of the screen is unresponsive.
It was not updated to the latest android version.
It has never been opened, it was bought new.