To control your iPhone with the iOS 18 eye tracking feature, you need to download and install the iOS 18 public beta first.

1. With iOS 18 installed on your iPhone, launch the Settings app.

2. When the Settings app opens, navigate to the Accessibility.

3.Eye Tracking: Find and select the Eye Tracking option.

4.Enable Eye Tracking: Turn on the Eye Tracking feature.

Once enabled, you can use your eyes to navigate through your iPhone. Look at different parts of the screen to move the cursor.

It might take some time to get used to controlling your iPhone with eye tracking. Practice and adjust settings as needed.