Leni realized two years ago that she was on her smartphone far too much. She seldom left her room to chat with her parents, stopped going out on weekends and found she would sometimes spend 10 hours a day on TikTok and YouTube . "I noticed that I had really neglected school and did not study nearly as much as I used to," the now 18-year-old told DW. "I began monitoring the time I spent consuming media on my phone , putting my device away more often and no longer canceling plans to meet up with