According to numerous reports, some iPhone 12 series units are plagued by display issues. These include screen flickering and yellow/green tinting which were even acknowledged by Apple in an internal document obtained by MacRummors. The note which has allegedly been issued to Apple Authorized Service Providers confirms that Apple is aware of the display problems and is conducting its own investigation on the matter. In the meantime, Cupertino has advised technicians in its authorized service centers to not service affected iPhones for the time being and instead suggest owners to...
Source: https://www.gsmarena.com/iphone_12_units_plagued_by_display_tinting_and_flickering_issues-news-46358.php