Macworld According to security researchers, Apple has quietly added a new feature in iOS 18.1 that makes your iPhone harder to crack. 404 Media reported that iPhones stored by police in evidence were rebooting themselves, and it turns out it’s all due to a new Inactivity Reboot feature shipping in iOS 18.1. First reported by security researcher Jiska Classen, this new feature reboots your iPhone if it has gone unused for at least four days. This puts your iPhone into its “Before First Unlock” state. This is the state your iPhone is in after being restarted, which requires you to enter your PIN…