https://www.techradar.com/news/iphone-x2-may-heavily-rely-on-apples-biggest-competitor-samsung

Apple is reportedly struggling to find a suitable OLED supplier – that isn't Samsung –  for its new iPhone models rumored to launch later this year with 6.5-inch and 5.8-inch displays.

Its rival Samsung has supplied the screen tech for the iPhone X, but Apple’s effort to diversify its partnership with LG, which the company has purportedly invested $3 billion into, is said to not be working out too well.