During its WWDC keynote, Apple announced that the next version of tvOS and, therefore, Apple TV will include support for PlayStation 4 and Xbox One game controllers.

Now it has emerged that the company’s set-top box won’t be the only device to gain compatibility; iPhone and iPad will support the DualShock 4 and Xbox controller too.
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https://www.pocket-lint.com/games/news/playstation/148252-ios-13-will-add-ps4-and-xbox-one-controller-support-too-here-s-why-it-is-essential