To be able to use the new voice call feature, you need to update Hangout’s newest version (v.2.3) which is rolling out over the next few days. So if you’re not able to update, simply wait a day or two. Next to that, you also need to install the accompanying dialer app to activate voice calls. This only counts for Android users. For iOS and the web, you just need to open the app. The update of Hangouts puts it on the same level as Skype and other VoIP services. In many cases, the international rates of Hangouts are cheaper than the ones from Skype. Also, it seals the fate of Google Voice which will turn into a long forgotten memory (not that it hasn’t been almost dead already).
