https://www.techradar.com/news/these-are-the-ar-upgrades-reportedly-in-the-pipeline-for-ios-12

With Apple's WWDC 2018 developer conference getting underway on Monday, we're expecting an avalanche of news about iOS, macOS, tvOS, watchOS and more, and a new leak points to one of the iOS 12 upgrades – specifically, a new augmented reality feature.

Apple debuted its ARKit augmented reality tool for app makers last year, and has since been pushing the iPhone as a powerful device for all kinds of AR trickery. Now Reuters reports that iOS 12 will introduce phone-to-phone AR – so two devices will be able to see the same scene, in sync, in augmented reality.