Google Home app → WiFi → Check Internet
Tests speed at the ROUTER — not your device.
No WiFi signal issues. Measures ISP delivery to your home.
At close range, on compatible device. Via WiFi only.
Original Google WiFi & Nest WiFi: share 5 GHz for BOTH client traffic and mesh backhaul → slower satellite speeds
Nest WiFi Pro: dedicated 6 GHz backhaul → client traffic does NOT compete with mesh → satellite points are nearly as fast as primary
1. Ethernet → primary point → DCSpeedTest.com
If Ethernet = plan speed → ISP delivering correctly.
2. WiFi at 5 feet from primary point
3. WiFi near satellite point
Speed gap between steps 2 and 3 = backhaul overhead.
Any device. Any browser. Any point of the mesh. 15 seconds. Free, no Google account needed.