When you install the new updates for macOS Sequoia 15.3, iOS 18.3, or iPadOS 18.3, Apple Intelligence will start up by itself on devices that can use it, according to Apple’s notes for developers.
If you’re setting up a new iPhone with iOS 18.3, Apple Intelligence will be on right from the start. After you finish setting up, you can use Apple Intelligence right away. If you want to turn it off, go to the Apple Intelligence & Siri Settings menu and switch it off there. This will stop all Apple Intelligence features on your device.
Before, with macOS Sequoia 15.1, 15.2, iOS 18.1, and 18.2, you had to turn on Apple Intelligence yourself to use it. Now, it’s on by default, so if you don’t want to use it, you’ll need to turn it off.
Also, with macOS Sequoia 15.3, Mac users get something new called Genmoji, which lets you make your own emojis. All these updates also make notification summaries better, so you can see when a notification has AI-generated info in it.
These updates are in testing now with developers and beta testers. They should be available to everyone next week.