o2 - 4u is an Android application developed by ovos media GmbH that serves as a digital training and communication platform for employees and partners of Telefonica Germany Retail GmbH. This app provides general information about the market, your daily routine in the shop, and allows you to experience customer situations and even act as a mystery shopper.

In terms of content, o2 - 4u offers an insight into the market, your daily activities in the shop, three different customer situations, and the opportunity to be a mystery shopper. The app also contains information about technology, gadgets, apps, and entertainment, as well as updates on the latest news regarding Omnichannel.

Overall, o2 - 4u is a useful app for employees and partners of Telefonica Germany Retail GmbH, offering them a comprehensive training and communication platform that can help them better understand the market and improve their customer service skills.