https://www.techradar.com/news/iphone-x-owners-can-now-watch-hdr-youtube-videos >Owners of the iPhone X can now enjoy HDR YouTube videos on their flashly smartphones after the feature rolled out quietly to the handset. >There's not been any formal announcement from either Apple or YouTube, but iPhone X users took to the MacRumors forum and then Reddit to report the new playback option within the YouTube app.