Sony's PlayStation Remote Play allows you to stream your games to other devices such as PCs and handsets, allowing you to pick up where you left off across multiple platforms. The feature was announced back in 2015 and supports PS5, PS4, PC, Mac, iOS, and Android devices. Previously, mobile devices only offered Remote Play with the DualShock 4 controller. This changes now as Sony has rolled out support for the PlayStation 5's DualSense on iOS devices.
As of now, iOS 14.5 or above is required to pair a DualSense controller with an iPhone via Bluetooth. Other requirements such as having a minimum of 5MB broadband internet remains the same.
IGN tested the DualSense controller with an iPhone and noted some issues with support. For example, haptics seemingly do not work with Sony-published titles such as Astro's Playroom and MLB The Show 21. Similarly, while Adaptive Triggers function, haptics once again fail in Remedy's Control. Moreover, the headphone jack and the built-in speaker don't seem to be working yet either. It's unclear when and if these issues will be fixed. In a sort of a disclaimer at the bottom of its product page, Sony has cautioned that "availability of DualSense features such as audio output and haptic effects vary when using remote play on PC, Mac, iPhone or iPad; some features may not be available."
While Remote Play does not provide support for DualSense on Android devices at this point in time, it's likely that this support will be rolled out sooner rather than later. In the meantime, if you have a compatible iPhone and a DualSense controller, you can give Remote Play a shot by downloading the application from the App Store here.