ZDNET's key takeawaysI used Samsung's Connectivity Labs to diagnose and fix an internet problem. The tool shows useful data points like Wi-Fi dead spots, signal strength, and more. The hidden diagnostic tool in your pocketI've covered Samsung's Connectivity Labs tool -- found in modern Galaxy phones that run OneUI 6.0 or newer -- quite extensively, but this felt like a good time to revisit the hidden feature. It has a similarly friendly user interface, can measure download and upload speeds, and track signal strength throughout your home. In ways, such as detecting signal strength fluctuations, Samsung's Connectivity Labs is the same thing.