Might be. The phone I had was a 6S, and the fingerprint scanner worked at best 50% of the time.

All I can say with certainty is that I followed the setup instructions to a T. I also ended up doing the setup process many times over, because it was incredible how bad the fingerprint scanner worked. But it was always bad.

But yeah, it caused me great frustration. So I'm really happy about FaceID. That, and the gesture based navigation, was the reasons I switched to an iPhone X as soon as it came out.

But yeah, if it wasn't clear before. My iPhone had a better fingerprint scanner than my laptop. That I will give Apple. While it was still trash (in my opinion), it still worked better than my current laptop does.