https://thenextweb.com/apple/2018/05/29/report-apples-next-iphones-are-all-getting-oled-screens-this-year/

South Korea’s ET News reports that Apple plans to use OLED displays for all three iPhone models that it’s slated to launch next year.

That means their screens should be able to offer deeper blacks and higher contrast than LCD-based displays. For reference, Samsung’s Galaxy S9, Google’s Pixel 2, and OnePlus’ recent models all come with OLED screens. The iPhone X was the first phone from Apple to feature an OLED screen.