O₂ Business is a free iPhone application developed by Telefónica Germany GmbH Co. OHG and falls under the Business & Productivity category. This app helps you keep track of your communication details, from inclusive volume and tariff details to local network quality, all in one place. With O₂ Business, you can easily monitor your available communication capacities and usage, ensuring that you make the most out of your tariff. The app also provides you with a consumption check, which displays the status of your inclusive volume in real-time. Additionally, you can delegate calls, set call forwarding, manage your mailbox, and check the network quality nationwide.

O₂ Business also helps you to keep track of all your bookings, including the status of the assigned orders to your phone number. Moreover, you can easily trace your communication time, as the app provides you with a detailed call log of the last six months. With the app, you can also stay informed about the options and additional packages available in your tariff. The FAQs section and the Business-Hotline ensure that you get the assistance you need. Please note that this app is only for O₂ business customers.