Google is not the best when it comes to quality control of hardware. Previous generations of Pixel phones typically developed some kind of malady and the 6-series is no exception. Here are a few issues reported by new owners. One Pixel 6 Pro that drew attention exhibited a weird issue when powered off – pressing the Power button would cause the screen to flicker. Here’s what it looks like on video: Another issue that cropped up is a green tint on the display of a Pixel 6. It’s not an uncommon issue with OLED panels, many brands have experienced it, Google included (on the Pixel 4 XL...
Source: https://www.gsmarena.com/some_early_pixel_6_and_6_pro_buyers_report_screen_issues_weird_flickering_green_tint_and_a_second_pu-news-51621.php