Can I answer an incoming phone call on my Apple Watch using Siri command?

This seems to be now possible with just "Hey Siri" and "Answer the phone".

It is also possible with iOS v14.5 and compatible headphones. In Siri settings enable:

  • "Allow Siri when locked"
  • "Announace Calls" -> always

And now you can answer by saying "Answer" when there's an incoming call. Doesn't work with Apple Watch though.

Ref: https://lifehacker.com/use-siris-ios-14-5-update-to-answer-calls-with-your-voi-1846774139