Smartphones do almost everything. But they can't make cheap international calls without some help.
At the Germany-USA Career Center, we use a mobile dialer app that works with the best low-cost long distance calling service we know of for this purpose.
No contract / credit card required.
You can download this app free of charge. So all you need to do to get started is sign up here, and immediately get the 5% bonus for Germany-USA Career Center users on your sign-up and first recharge value.
It's a pre-paid service, so you don't have to sign up for a complex plan or put your credit card on file. You pay as you go, online.
Making international calls using these apps takes just one touch, and no WiFi or data plan is required - it's effortless!