What can I do to solve a problem?

If the headset does not function as expected, try the following steps to resolve the issue.

Find the symptoms of the issue in this Help Guide, and try any corrective actions listed.
Set the headset into the charging case.
You may be able to resolve some issues by setting the headset into the charging case.
Charge the headset.
You may be able to resolve some issues by charging the headset battery.
Reset the headset.
Initialize the headset.
This operation resets volume settings, etc. to the factory settings, and deletes all pairing information.
Look up information on the issue on the customer support website.

If the operations above do not work, consult your nearest Sony dealer.

https://helpguide.sony.net/