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We support as many transports as allowed by underlying systems to provide more options to users. Below table summarize what transports are being supported by WO Mic on each platform:

Android app iOS app Windows client
Wi-Fi Direct

No matter what transport is chosen, major operations are roughly same as those demonstrated in quick start. Below lists specific operations, configurations or hints you need to care for each transport.

USB transport +
We recommend USB transport whenever possible, as it is more robust than wireless connections. It also has lower latency and higher bit rate. To use USB connection, follow these: If all has been done well, your phone will be identified as one USB device with name "ADB Interface":
  • Press Windows + X and click Device Manager in the pop menu.
  • In Device Manager, go to Universal Serial Bus devices.
  • In the list, you are expected to find something like ADB Interface.
Bluetooth transport +
To use Bluetooth transport follow these steps:
  1. Pair your phone with computer if you haven't done that.
  2. On Android app, select Bluetooth as transport and start server.
  3. On client connection dialog, select Bluetooth as transport and choose phone name in drop-down list as target device.
Connect over Bluetooth
Wi-Fi transport +

Both phone and computer should be in same network. For most cases, they should connect to same router.

Wi-Fi Direct transport +

Wi-Fi Direct is used when no Wi-Fi router is accessible. To use it, turn on SoftAP on phone and connect PC to this AP. Note SoftAP IP may not be the default "". Consult your phone manufacturer if the default one does not work.


Mute/Unmute operation can only be done on phone.

Tap or on the app action bar to mute or umute.
Tap or near the volume bar to mute or umute.

Volume control

Volume control can only be done on phone.

Follow these steps to adjust volume on Android phone:
  1. On the action bar, tap
  2. In the pop menu, tap VOL+ to increase volume or VOL- to decrease it.
You can move the volume bar to adjust volume on iPhone. To the left, volume becomes lower; to the right, it becomes louder.

Control and media port

Control port and media port shall be used over Wi-Fi, USB and Wi-Fi Direct transports.

Control port should be configured to the same value on phone and PC; otherwise you will meet connection failure. Media port can only be configured on PC. It shall be synced to server automatically when making connection.

Audio source option

5 mic modes are allowed on Android. Due to various Android phone hardware and OEM customizations, not all modes may be supported on your phone. Even some are supported, they may not have same effect as described here. So please take below mode description as a hint and explore each mode on your phone to select appropriate one.

Play audio locally

Sometimes you may want play received audio data directly, e.g. for verification purpose. To do that, set Options -> Play in speaker checked.

Start server

Unexpected disconnection

Connection may terminate unexpectedly due to interference. To handle that, you can configure client to automatically re-connect or flash window to make warning:

Verify WO Mic driver is working

Once the driver is installed successfully, WO Mic virtual device will be created automatically. Follow these steps to check if the device exists and is working properly:

WO Mic device

Firewall issues

We promise our software (client, driver and mobile app) don't contain any virus or malware. However, some anti-virus or firewall software make wrong alarms about WO Mic client or driver. They might even delete client files or block network connection causing WO Mic to malfunction. If you meet those issues, please configure your computer to allow WO Mic to work normally.

Especially, if WO Mic used to work well and stops working suddenly, it's mostly caused by anti-virus software blocking. Some quick verifications: