This setup turns an Android phone into a wireless speaker, microphone, and webcam for a Linux computer. It works across distributions and desktop environments, and USB tethering is available when Wi-Fi is not an option.
Install first
Download CastSound on both devices
Install the phone app and desktop app before continuing.
Android
Linux
DownloadPrepare
Put your devices on the same network
Open CastSound on your Linux computer and on your Android phone. Connect both to the same Wi-Fi network. On the phone, allow microphone and local-network access when Android asks. On Linux, allow local-network access when the desktop app starts.
Connect
Choose the device you recognize
- On the phone, tap the name of your Linux computer in CastSound.
- Check that the name and code shown on the computer match the phone.
- Approve the connection on the computer and wait for the connected status.
If the device is not listed, scan the code shown on the computer or enter the local address displayed by CastSound.
Use CastSound
Choose CastSound in the app you are using
In your Linux sound settings, choose CastSound as the output to hear computer audio on the phone. For calls and recordings, choose CastSound as the microphone input. To appear on video, start the camera in the CastSound phone app and pick the CastSound camera in Zoom, Google Meet, or Teams.
If you get stuck
Check these three things
- Both devices are on the same non-guest Wi-Fi network.
- The phone allowed microphone and local-network access in Android settings.
- Your firewall allows CastSound to receive local connections (open the port shown by the app).
Still not connected? Try the USB tethering guide or contact support.