Google enhances Android security with automatic restarts after three days of inactivity. This new feature, delivered via a Google Play services update (not an OS update), improves security by returning devices to an encrypted "Before First Unlock" (BFU) state. This requires a password, PIN, or pattern unlock, enhancing protection against unauthorized access.
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The feature, first reported by 9to5Google, is included in the April Google Play services update (version 25.14). It applies to phones and tablets, performing a simple reboot—preserving your data—rather than a factory reset.
This proactive security measure safeguards idle devices, making them more resistant to unauthorized access. The automatic restart triggers the BFU state, disabling biometric authentication (fingerprint unlock) and requiring a password or PIN.
This isn't unprecedented; Apple introduced a similar function in iOS 18 (later adjusted to three days in iOS 18.1), and other systems like GrapheneOS offer comparable features. Samsung devices also allow users to schedule automatic reboots, though this isn't activity-based.
Google's implementation is automatic for enhanced security. Currently, the rollout's scope and timeline remain unclear. Users can manually check for updates via Settings > Security & privacy > System & updates > Google Play system update.
Customization options are currently unknown, as is whether the lock screen will notify users of the automatic reboot. However, a typical post-reboot notification indicating a restart and the need to unlock is expected.
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