IEEE Class 3 Face Unlock (STRONG_BIOMETRIC)

My team and I have implemented the new Android BiometricPrompt, and it works as expected on GPx8 line…but when we try to test with SG24 line, it only does fingerprint. I had read that Samsung had implemented Class 3 (STRONG_BIOMETRIC) face unlock in the GS24 line. Am I mistaken? Or is there a special API just for Samsung phones?