iOS 27 is available in Australia. It went live this week. Apple says to get your phone ready first. You should save your important files. You should also check storage space. The update adds new features. Siri has been revamped. Fresh system utilities are added. Compatibility includes iPhone 12 and later models. Recent iPads are also supported. Older devices like iPhone 11 are left out. Users are told to prepare before updating. A backup is essential. Free space is required. The rollout is underway.