2025-08-12 00:00:00 fraenk is a mobile flatrate app that helps you to manage your mobile phone plan in a cheap and easy way: only 10 € or 15 € per month, no hidden costs, no contract period, and simple cancelation policy on a monthly basis. Good, right? Visit fraenk.de for more information. fraenk – a Telekom brand • 15 GB for 10 € / 40 GB for 15 € (use fraenk for friends to get permanently more GB) • Incl. 5G connection across Germany