Sync Your Contacts
Before you can begin making calls with Google Home, you will need to make sure it has access to the contacts on your phone.
Open the Google Home app on your phone. You will see your profile picture at the top-right of the screen (drag the screen down a little if it is not immediately visible). Tap on the profile picture, and from the menu that pops up, tap Manage your Google account.
On the new screen that opens, look for the People & sharing section in the tabs that run along the top (you might need to scroll across to see it). In this section you will see Contact info from your devices. Tap this and check to see if it is enabled. If not, tap the slider to enable it.
If you have a lot of contacts, and are doing this for the first time, it might take a few seconds to sync everything across. Once this is done, you can return to the Google Home app main screen.
The next thing to check are the Personal Results settings. These settings make it possible for multiple members of your household to use a single Google Home speaker to perform personalised actions, such as checking emails or making calls.
To check these settings, open the Google home app and tap the device for which you want to set personalised results (e.g. your living room speaker). On the device info screen, tap the settings icon and then scroll down until you see Recognition & Personalisation. Tap this and make sure that Allow personal results is enabled.
Making Your First Call with Google Home
With the setup done, you can now try out the hands-free calling offered by Google Home. Because calling is based on your contacts list, you will need to know how your contacts are named, or know their phone number. Assuming you do, you can say something like:
“Ok Google, call <contact name>”
“Hey Google, call <phone number>”
“Hey Google, call <name of local business>”
You can even combine calling with another query. For example:
“Hey Google, what is the nearest pharmacy? [Google’s answer] Call them”
When you have finished the call, you can end it in a number of different ways:
“Ok Google, stop”
“Ok Google, end call”
“Ok Google, hang up”
If you need to call the same person back shortly after hanging up, you can say:
“Hey Google, redial the last number”
You can find loads more Google Home, Amazon Alexa and other smart speaker guides at Smart Speaker Stuff.