Owning the phone since launch I'm not a big fan of Face ID anymore. There's a very specific distance the phone needs to be from you to have it work. If I put the phone on my phone holder in the car it's too far to have it work so it has to be removed from that or I have to lean forward until it works. If I fully extend my arm and look at the phone it doesn't work anymore for example.
It would have been much better to have both Face ID and a front Touch ID button. On my Note8 I kinda like the positioning of the fingerprint sensor because even with my phone in the car mount I can hit it easily. It it was on the back on the iPhone I'd still have to take it out.