Apple began rolling out iOS 27 across the country in Australia this week. This software is live for compatible iPhone models. To set it up, open Settings. Then open General. Then hit Software Update. The phone will scan for the update and show it if the device is compatible. Only some older models will receive iOS 27. The arrival date for iOS 27 is September 14, 2026. So the launch is active now. A number of iPhone users will get the update immediately. Others will not. The result hinges on the handset.