Only one way to send an incoming call to voicemail from Lock Screen on iOS 16.3
Currently, it appears that there is only one way to send an incoming call to voicemail from the lock screen on iOS 16.3, and that method only works if you have the 14 Pro or 14 Pro Max. There is no red hangup button when a call rings from the Lock Screen and the previous double-click the power button no longer works, as that is reserved for Apple Pay.
If you have 14 Pro or Pro Max, you can unlock the phone with a swipe up twice while the call is ringing, then long press on the phone icon from the dynamic island, and finally click the red hang up button presented.
This is really nuts for basic functionality from a smartphone, how about just put a hangup button on the Lock Screen along with the green slide to answer button. I wonder sometimes what the devs are thinking, don't they ever want to send calls directly to vmail??? J