Any way to Auto Unlock 🔓 Mac with nearby iPhone?

I’m new to Mac, but have had iPhones, and iPads for years. I see that you can auto-unlock Mac with Apple Watch, see https://support.apple.com/en-us/102442 , but as far as I can tell, there seems to be no way to auto-unlock with iPhone. Does this feature exist? If not, WHY not? Am I just missing something? THANKS.