iOS 27 rolled out for iPhone users on Monday, Sept. 14. Here are the new features and a list of the devices it's compatible with.

With iOS 27's new iPhone Handoff feature, Apple smartphone owners can use one number with two separate devices. Users can swap back and forth and pick which device will receive phone calls and messages, and then switch it back at any time.

Apple released iOS 27 this week, and despite the company's focus this year on refining its flagship operating system and nixing bugs, there are still many additional features to explore, not least of which is Apple's new context-aware Siri,

OS 27 is now available for supported iPhones, with Siri AI, faster performance, Liquid Glass refinements, improved parental controls, and new features across Apple’s apps.

Apple Vision Pro users are also getting the Siri AI overhaul today as part of visionOS 27, as well as the ability to preview notifications by using your eyes, UI updates to the Control Center, improvements to Wi-Fi connectivity, and support for using the panoramas you’ve photographed as immersive scenes and environments.

Apple's press release for the iPhone Duo last week said the device will ship with iOS 27.1, which essentially confirms the software update's release timing. iPhone Duo launches on Friday, October 23,

OS 27 has officially launched with massive Siri AI upgrades, but Suggestions in Messages and AI password fixes are delayed.