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 Wi-Fi or data plan is required - it's effortless!