FONIC mobile offers a convenient app for iPhone users, developed by Telefonica Germany GmbH & Co. OHG. This free app falls under the Business & Productivity category, providing essential features for FONIC mobile users. Users can easily monitor their balance, track remaining free units for minutes, SMS, and data volume, recharge credit via various methods, and manage their tariffs seamlessly. Additionally, the app allows users to view and download billing statements, update personal information, lock their SIM card, and access customer support via a free chat feature.

The app also supports multiple logins, enabling users to switch between accounts without repeated password entry. Users can conveniently check their current usage through a widget on the "Today" view or with 3D Touch on the app icon. However, please note that due to technical limitations, the app currently does not support booking Surf add-on packages or displaying the remaining data volume for such packages.