2025-09-24 00:00:00 Keep your O2 services under full control and always with you at all times. With the My O2 application you can easily, online and free of charge manage your services, you will get a constant overview of the use of your data, calls or SMS messages. In the application, you can activate additional services with a few clicks, such as Smart Travel Insurance, which always switches on automatically when you are in a roaming zone or you can, for example, buy the missing data. You can log in to the application using your fingerprint, Face ID, entering your username and password, or logging in once. You will always be in the picture Turn on mobile announcements and we will keep you informed about news