USB WiFi Monitor

Emanuele Faranda

About this app

This app allows you to capture raw WiFi frames in the 2.4 GHz band on stock kernels without root. Forget about configuring a monitor mode driver on your PC and start using your Android device!

IMPORTANT this app requires a USB WiFi adapter with the AR9271 chipset, connected to your Android device via an OTG usb cable. See below for more details.

Features:

- Show the nearby access points and stations
- Capture WiFi management/data frames and save them to PCAP file, e.g. beacons, probes and QoS data (control frames not captured)
- Switch between automatic channel hopping and fixed channel
- Supports 802.11bgn (ac not supported)

Instructions:

1. Buy a WiFi USB adapter based on the AR9271 chipset, e.g. the Alfa AWUS036NHA. You can find cheaper unbranded adapters in online stores
2. Connect the adapter to the Android device via a USB OTG cable. Non-OTG cables will not work!
3. A popup will open. Grant "USB WiFi Monitor" the permission to access the USB device
4. Hit the Start button in the app to start capturing frames

If the capture is stopped due to an error, you need to unplug and re-plug the adapter.

API documentation: https://github.com/emanuele-f/UsbWifiMonitorApi

Ratings and reviews

I bought a wifi adapter just for this app, AR9271 chipset. My S22 does not recognize it. Too bad it seems perfect for what I need it for. I don't think its the app that is broken I think the S22 just blocks it. I hope I can get this working!

I am connect my Alfa AWuso36h wifi adapter. But it's doesn't work. It's doesn't detract usb adapter.

I accidentally found this app today i did some experiments with this app there is no crashes bugs works perfect with Atheros AR9271 chipsets im using android 14

What’s new

- Add API to control the capture via Intents
- Fix possible crash on capture stop
- Fix minor bugs and memory leaks