I’ve always hated the calling card solution to call back home. You have to dial the calling card access number, then optionally type in your pin number and then dial the international number that you are trying to call. It is cumbersome, and I hate it!
I use Reliance Global Call for my calling card needs. They have released a new application called express dial for certain smart phones (supported list) that make it so much easier to call back. When you dial an international number, this application intercepts that call, and calls the reliance toll free number instead. And it handles all the underlying work for you.
So the next time you need to call back home, you just dial your home number. Ah, life is good!