Help Guide
Wireless Noise Canceling Stereo Headset
WF-1000XM4
Unable to turn on the headset.
Make sure the battery is fully charged.
You cannot turn on the headset when the headset is placed and being charged in the charging case. Remove the
headset from the charging case to turn it on.
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.
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.
Reset the headset.
Initialize the headset, and pair the headset and the device again.
Related Topic
Charging
Checking the remaining battery charge
Resetting the headset
Initializing the headset to restore factory settings
5-027-983-11(6) Copyright 2021 Sony Corporation
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.
