Apple Adds New “Inactivity Reboot” Feature to iOS 18 to Enhance Security

Introduction

In iOS 18, Apple has introduced an inactivity reboot feature, designed to enhance iPhone security by automatically rebooting devices after they remain locked for four days. This feature puts iPhones in a more secure Before First Unlock (BFU) state, which restricts data access until a passcode is entered.

The Functionality of the Inactivity Reboot

This automatic reboot moves iPhones to the BFU state—a security measure requiring a passcode for access. BFU limits the extent to which law enforcement and forensic tools can extract data, making it challenging to bypass device encryption.

Chris Wade from Corellium and researchers like Dr. Jiska Classen have noted that this new layer of protection underlines Apple’s commitment to user privacy.

Privacy vs. Law Enforcement

The “inactivity reboot” feature is part of Apple’s broader security enhancements, creating additional barriers for unauthorized access. Although Apple has faced pressure from law enforcement to create backdoors, the company has continually advocated for device security.

Conclusion

Apple’s new inactivity reboot reinforces its commitment to privacy, demonstrating the company's ongoing efforts to secure user data against unauthorized access.

This security feature is another significant step in Apple’s ongoing privacy advancements, designed to uphold user trust and device integrity.