Help Guide
Wireless Noise Canceling Stereo Headset
WF-1000XM4
No sound
Depending on the smartphone app or computer application (which requires HFP (Hands-free Profile)/HSP (Headset
Profile)), you may hear a voice from only one headset unit.
If you are connecting a computer to the headset, make sure the audio output on the computer is set for a Bluetooth
device.
Pair the headset and the Bluetooth device again.
When the Speak-to-Chat mode is activated, music playback will pause. In this case, operate the touch sensor of the
headset to exit the Speak-to-Chat mode.
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.
Set the headset into the charging case and close the lid of the charging case.
You may be able to resolve some issues by setting the headset into the charging case.
Restart the smartphone or the computer you use.
Reset the headset.
Initialize the headset, and pair the headset and the device again.
When you connect the headset to 2 devices simultaneously with multipoint connection, depending on the connected
device, the device may keep sending the silent signal even if the playback of the music or video is stopped. In this
case, the headset remains connected with the device, and the connection may not be changed to another device. If
the sound from the second device cannot be heard after the playback is stopped on the first device, operate in the
following order and check whether the situation has improved.
Check with the “Sony | Headphones Connect” app that the setting of [Connect to 2 devices simultaneously] is on.
Stop the playback of the application on the first device.
Shut down the application on the first device.
Select the device you want to play from [Manage Connected Device] of [Device Currently Being Connected] on
the “Sony | Headphones Connect” app, and then start playback.
Related Topic
Using only one unit of the headset
How to make a wireless connection to Bluetooth devices
Listening to music from a device via Bluetooth connection
Voice Assistant setting
menu item Specification
[Voice Assist Function of
Mobile Device] Either headset unit 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.
Assign the [Playback control] function to the touch sensor on the headset unit you
want to use.
In the factory settings, [Playback control] is assigned to the right headset unit.
When you assign [Playback control] to both headset units, full functionality is only
available on the right headset unit.
[Do not use] Either headset unit can be used.
