Apple's newest update for the iPhone include a hidden, important AI feature. When the software update is installed, it begins a process of "re-indexing" that gets the phone ready for one of Apple's biggest updates in years. "This update includes bug fixes, security updates and optimises the Spotlight index to prepare for iOS 27," Apple's own notes read. Early users of the upcoming iOS 27 update have reported that process taking a long time. The release of iOS 26.6 comes about a week after Apple opened the public beta of iOS 27.