Your online service now also compact as an app! Full consumption control: For full control and a complete overview of your mobile phone contract, download the new Klarmobil.de app now. As a private customer with a fixed-term contract, you have all the most important information at a glance here. Full cost overview: No more surprises. You can see your current costs and remaining inclusive units such as data volume, minutes or SMS directly on the app's start page. In addition to the current cost