how exactly is it free then? person X sitting on their computer, they click call person Y. google will first call person X's mobile (he will pay to receive) a

how exactly is it free then? person X sitting on their computer, they click call person Y. google will first call person X's mobile (he will pay to receive) and then call person Y's mobile (he will also pay to receive) and connects both. so, where is the free part? And since the monetary currency in mobile bills are minutes, you are paying the exact same thing as if person X just picked the phone and called person Y. actually, if he did that, then it may be really free as operators gives more minutes for mobile to mobile calls! which is not the case when receiving a google voice callback by starting the call in the browser.