Face recognition unavailable oppo find x

[winsomehiteshchopra]

Onky 7/10 times it will open through face recognition.
Is there problem wirh my handset or everyone having oppo find x facing same issue

 

[thierry34]

Mine work very well. In the dark, no problem too. Repeat the method to recognize your face...

 

[Andrewtst]

Never fail before, work perfectly fine even in full dark environment.

 

[Nrgt d117]

I have same problem, I don't know why?
If anyone knows why ?