On Monday, Apple rolled out the new macOS Sequoia 15.3.1 and iOS 18.3.1 updates — and it seems the update has inadvertently turned on Apple Intelligence for a slew of users as spotted by MacRumours ...
On Mac, go to > System Settings > Apple Intelligence & Siri and flip the Apple Intelligence toggle to off. On iPhone, open the Settings app then Apple Intelligence & Siri and flip the Apple ...