Before First Unlock Mode for Enhanced Data Encryption
After the reboot is complete, the phone enters "Before First Unlock (BFU)" mode, an advanced security mode that prevents access to device data unless a passcode or PIN is entered. During this state, all information and files remain stored in a fully encrypted form, making it difficult for any third party to access them, even if they physically possess the device.
Release Date and Reactions
This update was officially released on April 14, 2025, and is expected to gradually reach all Android phones over the next few days and weeks. Since the update is implemented through Google's back-end services, users won't need to download or install any manual files to activate it.
It's worth noting that this feature is a direct response to growing trends toward privacy protection and is very similar to the "Inactivity Reboot" feature launched by Apple in iOS 18.1. This feature has raised concerns among some security agencies, given the additional difficulties it imposes on attempts to access data on confiscated or lost phones.
The Importance of This Step in a Changing Security Environment
In a world where the pace of cyber threats is accelerating, this update represents an important addition to Google's digital security system. It not only protects against theft or loss, but also ensures that user data remains encrypted and secure even in the most dire circumstances.