YouTube has a zoom-to-fill mode for the Pixel 2 XL
(Android Police)

More and more phones are being released with 18:9 screens (can we just call them 2:1?), and OEMs usually make small tweaks to Android to improve the experience. Google is no exception, as the company has made at least one change for the Pixel 2 XL - a new mode for YouTube videos. On the Pixel 2 XL, you can now pinch and zoom to adjust the video fit. By default, the video fits inside the screen, but you can do a zoom gesture to make it fill the entire screen. Read MoreYouTube has a zoom-to-fill mode for the Pixel 2 XL was written by the awesome team at Android Police.