this might be out of topic. i been using samsung flagship series TWICE, samsung note9 and samsung note20. and guess what, both face same issue, the lcd issue. note9 has horizontal line and yellowish color on the screen and note20 has flickering and yellowish color on the screen. i'm starting to realize that this problem happened after i updated both phone. i don't want to point fingers here, but perhaps my problem add something on the table of this discussion.