There is a new service that will allow you to make payphone or pay phone calls completely for free. This service uses a 1800 number, toll free number, that you dial and then listen to a 30 second audio advertisement. After this you a free to make a free phone call to anyone in the United States. This service won’t let you make free pay phone calls outside the United States unfortunately.

How To Make Free Pay Phone Calls
Simply call PHAD at 1-800-980-PHAD (7423). Dial your number, listen to the 30 second commercial, and then you will be able to call your destination!