The recorded lesson discusses the role of smartphones in the daily lives of children like Oskar, Mathilda, and Gustav, highlighting how they are the primary medium for communication and entertainment. The children enjoy using messaging services like WhatsApp and participate in class chats, although they follow strict rules like keeping phones away during meals. The lesson also touches on parental concerns about excessive digital media use and how families, such as the Geiers, try to balance technology by encouraging outdoor activities and open discussions about media consumption.