What feature allows an iPhone to automatically become a network for nearby Mac or iPad devices?

The feature that enables an iPhone to automatically become a network for nearby Mac or iPad devices is Instant Hotspot. This functionality allows devices that are signed in to the same Apple ID to connect to the internet without needing to manually establish a connection or enter passwords. When a compatible Mac or iPad is in proximity to an iPhone that has mobile data, the devices can seamlessly detect the iPhone and connect via the Instant Hotspot feature.

This is particularly convenient for users who may need internet access while on the go and do not want to go through the hassle of setting up a traditional hotspot each time. Instant Hotspot enhances user experience by providing a quick and efficient way to access mobile data, leveraging Apple’s ecosystem for easy connectivity.