Troubleshooting using only one unit of the headset (WF-1000XM4)

If you are experiencing issues when using a single unit of the headset, try the following:

1. Check the assigned function
   • Depending on the assignment of the touch sensors and/or the Voice Assistant setting, you may only be able to use one unit of the headset.
   • Refer to the following and check the setting in the “Sony | Headphones Connect” app.

     Voice Assistant setting menu item	Specification
     [Voice Assist Function of Mobile Device]	Either unit of the headset can be used.
     [Google Assistant] or [Amazon Alexa]	Only the headset unit with the Touch Sensor Control function set to [Playback control] can be used alone. Assign the [Playback control] function to the headset unit you want to use alone. In the factory settings, [Playback control] is assigned to the right unit. When you assign [Playback control] to both headset units, full functionality is only available on the right unit.
     [Do not use]	Either unit of the headset can be used.

2. Make sure both units are fully charged
3. Reset your headset

Note: When you play music or other stereo audio while wearing only one unit, you will hear monaural sound with the left and right channels mixed.