FRITZ!App Fon is a handy tool that lets you use your smartphone as a virtual landline phone. It allows you to make calls over your landline numbers even if you’re not in the same Wi-Fi network. It is perfect for use with your FRITZ!Box.

In order to use FRITZ!App Fon, you need a smartphone, a Wi-Fi network, and a number for your landline. After downloading FRITZ!App Fon, make sure that you’re connected to a Wi-Fi network, and then launch the app. Next, you will be asked to confirm that you want to make calls. After that, you will be connected to your landline phone number. From now on, you can make calls by selecting the number you want and pressing the call button.

The app will automatically detect the number you selected. You will then be asked to confirm that you want to make a call.