Setting up FRITZ!App FonFRITZ!App Fon allows you to conveniently make telephone calls over the FRITZ!Box with your smartphone when you are at home – the smartphone functions as an IP telephone. You can also use FRITZ!App Fon with several FRITZ!Boxes and thus make calls over different FRITZ!Boxes. For this you must set up FRITZ!App Fon once on each FRITZ!Box as described here. After setting it up,...
> https://en.avm.de/service/knowledge-base/dok/FRITZ-Box-7590-AX/251_Setting-up-FRITZ-App-Fon/
Setting up MyFRITZ!App for AndroidWith MyFRITZ!App for Android you have easy and secure access to your FRITZ!Box and your home network at home or on the go. Depending on the FRITZ!Box model being used, the app informs you about calls, voice messages, and other events. you can enable and disable the FRITZ!Box answering machine and call diversions. you can quickly block and unblock internet access...
> https://en.avm.de/service/knowledge-base/dok/MyFRITZ-App/3266_Setting-up-MyFRITZ-App-for-Android/