Are android phones always listening and recording?

With all the anecdotes of people talking about something and suddenly seeing it in their ads over the years, has there been any new consensus on whether or not our microphones on smart devices always listening to us? And if they are, would they constantly send all audio to their own servers, or would they delete them? I obviously don't trust big tech and am now an avid GrapheneOS user, yet all my friends still use android phones, etc. Should …

android phones privacy recording