New iPhone auto-restart feature locks encrypted data after extended inactivity

Your iPhone data just got more secure, thanks to a new feature in iOS 18.1. This update includes an important security measure designed to protect your device and its encrypted data after long periods of inactivity.

Apple has introduced an Inactivity Reboot feature in iOS 18.1, which automatically reboots your iPhone if it has been idle and unlocked for more than three days. This feature uses the Secure Enclave Processor (SEP) to monitor when your iPhone was last unlocked. 

If the device stays locked for an extended period, the SEP notifies the kernel, which triggers a reboot and kills the Springboard (the core of iOS).

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