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If you notice this package consuming battery in your device care settings, it is usually because you use Face Unlock frequently, or an application in the background is continuously requesting biometric verification. 3. Why Does it Request Camera Permissions?
Authorizing transactions in secure apps like Samsung Pay.
This public link is valid for 7 days and shares a thread, including any personal information you added. This link or copies made by others cannot be deleted. If you share with third parties, their policies apply. Can’t copy the link right now. Try again later. com.sec.facatfunction
: The name typically refers to "Factory AT Function," which is used by Samsung for automated internal testing and factory-level diagnostic commands (AT commands) [3, 4].
com.sec.facatfunction is a legitimate Samsung system app responsible for face detection, biometric authentication, and hardware testing. While it is generally safe, it has been the target of recent security vulnerabilities that Samsung has patched. By keeping your device updated, you can continue to use your phone's face features without worry.
Note: If you found this package behaving suspiciously (e.g., requesting network access from a third-party firewall), it could be a sign of a compromised system or a malicious app spoofing the package name, which is rare but possible on rooted devices. This public link is valid for 7 days
com.sec.facatfunction is an integral, albeit obscure, part of the modern Samsung Galaxy experience. It is a legitimate system app used for essential factory testing and hardware diagnostics. However, its deep integration and high-level privileges made it a potential target for security researchers, revealing two significant vulnerabilities in 2026.
: Often used for system-level triggers like sysdump or FactoryReset .
Every time you look at your phone to unlock it, this service initializes. Can’t copy the link right now
If an immediate update is not possible, users were advised to restrict access to the FacAtFunction feature or switch to a watch face that removes it.
To clarify how com.sec.facatfunction differs from regular applications, consider the following structural breakdown: Characteristic com.sec.facatfunction Standard App (e.g., Instagram) Samsung Electronics Third-Party Developers Visibility Hidden System Background Process App Drawer Icon Storage Location System Partition ( /system/priv-app/ ) User Data Partition ( /data/app/ ) Removability Cannot be uninstalled via standard menus Easily uninstalled by the user Permissions Pre-granted privileged biometric/camera access Manual opt-in permissions requested at runtime Common Concerns Explained 1. Is it Malware or Spyware?
: It is the underlying service for Samsung’s "Secret Menu" (accessed by dialing
that asks for your face instead of a password.
Always verify unknown system packages before modifying. For com.sec.facatfunction , more context is needed—check logcat timestamps and accompanying error messages.