Android phones are getting an important new security feature that is aimed at protecting users’ personal data if the device is left unattended for too long. Google has introduced an automatic reboot system as part of the latest update to Google Play services. This new feature will activate if your phone remains locked and unused for three days.
How the Feature Works on Android Phones
The feature is being rolled out with Google Play services version 25.14. It is designed to restart the device after 72 hours of inactivity. Once your phone reboots, it enters a high-security mode where all stored data remains encrypted. During this time, biometric methods like fingerprint or face unlock are disabled. This prevents anyone from accessing your phone—even if they physically have it. Google said,
“Google system updates make your Android devices more secure and reliable, and give you new and useful features. With this (security) feature, your device automatically restarts if locked for three consecutive days.”
This new security measure puts Android in line with Apple, which introduced a similar feature called ‘Inactivity Reboot’ in iOS 18.1 last year. Apple’s feature also reboots iPhones that have been idle for three days, adding another layer of protection for devices that may be lost or stolen.
BFU and AFU Modes on Android Phones
On Android, this feature is known as the ‘Before First Unlock’ (BFU) state. It ensures that the phone stays in a secure state until a passcode is entered. During this time, there is no access to sensitive data. Once unlocked, the phone switches to the ‘After First Unlock’ (AFU) mode, re-enabling biometrics and restoring full functionality.
User Control Over the Feature
For now, it seems that the three-day auto-reboot feature is optional. According to Google’s changelog, users may have the ability to enable or disable this setting based on their preferences. Although this feature is currently listed for phones, Google is expected to bring it to Android tablets in the near future.
Privacy Protection in Cases of Theft or Loss
This update could prove especially useful in cases of phone theft or loss. Even if someone manages to hold onto your phone for days, they won’t be able to access it without the passcode once the automatic reboot kicks in.
This new security feature reflects Android’s ongoing efforts to enhance user privacy and device protection, aligning with similar initiatives in the tech world to safeguard sensitive information.