Samsung utilizes this package across both mobile platforms and wearables. On devices running (such as the Galaxy Watch line), it performs identical diagnostic functions, ensuring that specialized components like heart rate monitors and BIA sensors report operational data reliably. Why Does it Appear in Google My Activity?
In February 2026, Samsung disclosed a vulnerability tracked as . The issue was described as "improper input validation in FacAtFunction prior to SMR Feb-2026 Release 1" .
To safely disable the app for the current user, execute the following command: adb shell pm disable-user --user 0 com.sec.facatfunction com.sec.facatfunction
The package has been noted in security research due to its elevated system privileges.
: Removing core "com.sec" packages can lead to system instability, boot loops, or the failure of essential features like the Camera or Phone apps [6]. Samsung utilizes this package across both mobile platforms
: The com.sec prefix suggests that this could be related to Samsung ( com.sec often being associated with Samsung's package naming convention). However, without more details, it's hard to say if it's directly related to facial recognition functionality or another feature.
Samsung itself has remained purposefully vague about the inner workings of this package, stating that details are proprietary and reserved for developers. However, user observations and in-depth community discussions have managed to connect the dots, with the consensus being that this service is critical for the phone's core functionality. In February 2026, Samsung disclosed a vulnerability tracked
This typically appears randomly, especially after system updates or when launching an app that accesses sensors (e.g., camera, maps, games).
Most user concerns revolve around a few simple observations or the rare occurrence of an error message.
Have a question about com.sec.facatfunction on your specific Galaxy model (S22, S23, Z Fold, A54)? Drop a comment on the forum below or contact Samsung Members support referencing "FACAT sensor errors."
If it crashes once, clear its cache. If it crashes persistently, check your proximity sensor and light sensor for physical damage. And if all else fails, remember that a recalcitrant com.sec.facatfunction is often the first sign of a failing hardware sensor—a sign that it might be time to visit a Samsung service center.