Opening a new thread as I'm still experiencing this with Android phones. (Apple phones seem to work just fine)
Multple threads have been opened before and closed without a solution, see:
Thanks for bringing this up to me, I'd love to take a look into this for you. The first troubleshooting step that I'd recommend would be to restart your device. This process should keep all your settings, and reconnect it to the same Wi-Fi network. This might be helpful if it ever freezes, has connection problems, or isn't working normally.
@bvandijk, it's us again. How's your Nest Doorbell? Have you checked if you have Bluetooth devices connected to your mobile phone? Can you check if you can hear audio from other apps just fine?
Give these steps a try:
Check your Google Home app or Nest app permissions:
Test if your device’s microphone is working.
Hit this link for more information and steps.
I appreciate the help, Brad.