There are usually multiple microphones in phones and tablets. I have 7 devices in my office with microphones that I use ocassionally. 2 of them are phones and

There are usually multiple microphones in phones and tablets. I have 7 devices in my office with microphones that I use ocassionally. 2 of them are phones and have the potential to be always-on (hopefully not though). I have a webcam / microphone that I keep off and covered. The others are tablets and laptops which are usually off. I also have a small robot that is always listening (not recording sound) and he has WiFi, I know he's not "thinking", but sometimes I wonder...