You must also have hangouts first before you can use the hangouts dialer. [substeps] Hangouts is usually preinstalled in most android devices.
[header] How to make free calls on android with google voice [title] Get hangouts and the hangouts dialer. [step] The hangouts dialer enables calling in the hangouts app. The hangouts dialer will also allow you to make free calls to people who are not in your gmail contact list.