Samsung's free Connectivity Labs tool maps Wi-Fi dead spots in minutes
A hidden utility in Galaxy phones provides real-time signal heatmaps to optimize placement.
Samsung's Connectivity Labs, a free diagnostic tool on Galaxy phones with OneUI 6.0+, helped Kerry Wan diagnose and fix his home office's Wi-Fi. The tool generates a real-time heatmap of signal strength in dBm, revealing his desk location received -80 dBm on the 5 GHz band. After swapping his desk and cabinet, download speeds improved by roughly 100 Mbps and upload by roughly 50 Mbps. For non-Samsung users (Google Pixel and iPhone lack a native equivalent), free third-party apps like Ubiquiti's WiFiman offer similar features, including room-specific signal logging.
- Connectivity Labs is hidden in Samsung Galaxy phones (OneUI 6.0+) under Wi-Fi settings → Intelligent Wi-Fi → 7 taps on version number.
- Real-time heatmap measures signal in dBm: -30 to -50 excellent, -60 to -70 adequate, below -70 poor; Wan's 5 GHz hit -80 at his desk.
- Relocating his desk by 6 feet boosted download speeds by ~100 Mbps and upload by ~50 Mbps, eliminating the need for an ISP plan upgrade.
Why It Matters
A free, app-based diagnostic can identify simple placement issues, saving professionals from costly ISP upgrades.