This function lets you run a scan to detect WiFi networks nearby/detectable by your router.
The results show:
This information can help you decide which channels might be optimal for your own WiFi network or just learn about other, “nearby” networks.
This tool is fully functional. However, you may find more useful presentable data and convenience using other tools. The WiFi scanner apps available for smartphones are a good example.
There are several advantages to using an external, portable device: