Despite a strained relationship between Apple and Samsung Display, the South Korean manufacturer continues to be the leading supplier of OLED panels for iPhones. In fact, it has been going so well that it will ship a higher number than expected. Depending on the volumes in December, the total will be somewhere in the range of 40-50 million panels. Samsung Display is shipping 90% of the OLED panels used by iPhones, including the latest 11 Pro models. LG Display is supplying 7-8 million panels for the iPhone 11 Pro Max. Here are Samsung's numbers by month (the October and November numbers...
Source: https://www.gsmarena.com/samsung_display_ships_more_oled_panels_for_iphones_than_expected-news-39753.php