The Ik Ben app for iPhone is designed to give users complete control over their mobile subscription with T-Mobile Netherlands. This free application allows users to monitor their data usage in detail, view and download invoices, and modify their mobile plans as needed. Users can easily purchase additional data when their bundle runs out or adjust their monthly allowances of data and minutes to fit their needs.

In addition to managing subscriptions, the app offers convenient features such as changing personal information like address or bank details, toggling voicemail settings, and accessing customer service. Security is enhanced with options for fingerprint, PIN, or facial recognition login. Users with multiple numbers under the same account can quickly switch between profiles by swiping. Overall, the Ik Ben app provides a comprehensive and user-friendly interface for managing mobile services.