Using AirPort As Wi-Fi Scanner On Your iPhone
The Apple utility program AirPort usually supports managing the own wireless network. A hidden setting though turns this app into a Wi-Fi scanner, which displays information about the accessible networks with their transmission power and the used channels. This trick doesn’t only help to set up your Wi-Fi network. It also assists you in detouring disruptive Wi-Fi networks.
You can download AirPort for free in the App Store. As soon as you have installed the utility app, open the Settings on your iPhone and scroll down until you find AirPort. Click the appplication and turn on the Wi-Fi Scanner by tapping the slide button.
Now open the AirPort app and click Wi-Fi Search in the top right corner. Afterwards you tap Scan on the next level. It’s in the top right corner as well. The app now scans all available Wi-Fi networks nearby.
Once the scan is finished you will see all networks with Mac address, RSSI and channel. If you tap one of them, the app will additionally display the time period of the measurement result for the signal (RSSI) and noise in dBm. Information about the channel use can be displayed via the “i” icon at the bottom right. This is pretty practical, if you want to avoid a disruptive Wi-Fi network.
As soon as you have got all information, we recommend turning off the Wi-Fi Search in AirPort, because this feature drains your battery.