A recent report suggested that iPhones were secretly communicating with each other in a way the police didn’t like. Now there’s a new answer to the mystery.

Jiska Classen appears to have solved the mystery. Apple quietly rolled out a new feature in iOS 18.1 that reboots a user's iPhone if it has not been unlocked for a certain period of time. The new feature causing police headaches is called "inactivity reboot."

A new report from 404 Media says that law enforcement officials in Detroit, Michigan believe that iOS 18 includes a “new security feature that tells nearby iPhones to reboot if they have been disconnected from a cellular network for some time.