That's news to me. Anyone I know with Samsungs just uses fingerprint unlock because the face unlock is so unreliable. In good lighting and if held at the right angle, sure camera-based ones can work OK. But iPhones can unlock in the dark or if your phone is just sitting flat on a table, as long as your face is anywhere near in front of the screen.
And unlocking is only a small part of it. Is Samsung's Face Unlock secure enough to authenticate things that need high security? Using Face ID, I can log into banking apps, trading platforms, password managers, etc. and pay for things with my phone without even noticing that any authentication has taken place because it's nearly instantaneous. With my prior phones I'd have to make sure my finger was on the sensor and if I had gloves on, wet hands, etc. it was a pain. Or in the case of my Pixel, when it was mounted on my dashboard if it locked itself Id have to try to reach around it to get to the fingerprint sensor on the back.
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