File-based Encryption (FBE) is a feature on Android devices that allows for more granular control over which files are encrypted on the device. With FBE, individual files are encrypted when they are written to storage, and they are decrypted when they are accessed by the device. This means that it is possible to have some files on the device that are encrypted, while others are not.

FBE was introduced in Android 7.0 Nougat as a replacement for Full Disk Encryption (FDE). FDE encrypts the entire device, including the operating system and all user data, while FBE allows for more flexibility in terms of which files are encrypted. One advantage of FBE is that it allows for faster boot times, since the system does not need to decrypt the entire device when it starts up.

To enable File-based Encryption on an Android device, you will typically need to go to the Security settings menu and select the option to enable encryption. You will be prompted to set a passcode or password that will be used to decrypt the encrypted files on the device. Once FBE is enabled, you can choose which files to encrypt by placing them in the appropriate directories on the device.

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