Android is rolling out a new optional security feature that automatically reboots devices if they remain locked for three consecutive days, according to a report by 9to5Google. The update, delivered via the upcoming Google Play services version 25.14, aims to enhance security by forcing devices into a 'Before First Unlock (BFU)' state, requiring a PIN or pattern instead of biometrics to regain access.  

According to the report, Google's release notes clarified that the auto-reboot function will be optional when fully implemented, addressing concerns from users who rely on continuously running devices, such as tablets. Once rebooted, a device will not automatically restart again unless unlocked and relocked for another 72-hour period.  

The feature applies only to phones and tablets, excluding Wear OS, Android TV, and Android Auto. Unlike GrapheneOS, which allows custom reboot timers (10 minutes to 72 hours), Google's implementation offers no adjustable settings, says the report.  

Apple introduced a similar security measure in iOS 18, initially setting a seven-day threshold before reducing it to three days in a later update. Google's move follows the same logic—preventing prolonged unauthorised access to locked devices.  

The update is rolling out gradually through Google Play services, meaning most Android devices will receive it without requiring a full OS upgrade.