Yesterday I tried the new face recognition unlock and it worked, but the way it works is a bit annoying, and doesn't help make it very useful.
Google's smart lock (a similar concept) lets you register your face several times, in different positions, distances, with or without glasses, hats, caps, etc. Blackview's face recognition just allows for the registering of one face, so in order to unlock the phone with your face, you have to face it in exactly the same position and from exactly the same distance, and that's why it's not so useful. Having different faces recorded would help the phone recognize the user's face in various positions and distances, so the phone would unlock faster and 100% of the time. As it is now, fingerprint unlocking is better, faster and more convenient.
It would be quite a neat feature to have.