In the most recent update, the Google Home has gained the ability to function as a Bluetooth speaker. Although many apps allow you to cast to your Google Home, not all of them do. So this is a feature that many people may want to use.
First, you need to make your Google Home discoverable. There are two ways to do this. The easiest way is to say, “OK, Google, Bluetooth pairing.” This will make the device discoverable for a few minutes. The second way requires the Google Home app on your mobile device.
Now open Bluetooth settings on your mobile device, and select your Google Home speaker. Your device will now stream to your Google Home.
To unpair your Google Home, repeat the steps above. But select unpair instead of the previous pairing option.