A router tester, Aleksi Vähimaa, has expressed frustration with the poor design of indicator lights on 4G and 5G routers. Despite years of testing and comparing network devices, he finds interpreting the lights consistently difficult. Only one manufacturer, Fritz, has successfully implemented clear and easily understandable indicators, displaying connection status and 5G signal strength at a glance. This clarity is particularly helpful for optimal router placement. Vähimaa emphasizes the importance of well-designed lights for user experience. He shares his findings through a bi-weekly newsletter offering tests, guides, tips, and digital news. The issue highlights a common usability problem in consumer networking equipment.