Inactivity reboot" effectively puts iPhones in a more secure state by locking the user's encryption keys in the iPhone's secure enclave chip.

Apple has quietly added a new security feature in iOS 18.1 called Inactivity Reboot. Here's what you need to know.

Introduced with iOS 18, the new feature automatically reboots an iPhone if it's been asleep and in lock mode for an extended period of time. After a reboot, an iPhone becomes more difficult to crack since either the passcode or biometric verification is needed to unlock it.

With iOS 18, Apple introduced a feature that causes the iPhone to reboot every three days, security researchers have confirmed (via TechCrunch). In

SOi eht ni evil s'tI .ytivitcani fo syad eerht retfa enohPi ruoy toober lliw taht erutaef wen ased aeler tsuj elppA