how do I make Google Assistant wake up and unlock my S8? (from screen off, not connected to charger)

[AC Question]

On AT&T Note 4 I could place it on a counter, asleep and locked, and from across the room I could say "OK Google" and give it a command or ask a question and it would wake up, unlock, and perform the task. Is Samsung going to fix this in a patch or update? I'm hearing LG-G6 and HTC U-11 both have this feature still functioning on their units.