There is no sound, or sound is only heard from one side of the headphones

Solution

Change the audio balance setting on the connected device.
Note: The names of the settings or procedure may vary depending on the smartphone model or OS version.

1. Unplug the headphones from the device three times. The last time, make sure to firmly plug it in.
   

   The issue is resolved

   The issue was due to poor connection which can occur if the plug is dirty. Make sure to clean the plug regularly.

   The issue is not resolved

   Go to the next troubleshooting step.

2. Turn up the volume on the connected device.
   

   The issue is resolved

   The issue may have been caused because the volume was set too low.

   The issue is not resolved

   Go to the next troubleshooting step.

3. Change the audio balance setting on the connected device.
   • Android smartphone
     1. Open the Settings.
     2. Select Accessibility.
     3. Scroll down to the Audio section and tap Audio Adjustment.
     4. Move the slider for Audio balance to the center position.
   • iPhone or iPad
     1. Open the Settings.
     2. Select Accessibility.
     3. Select Audio & Visual.
     4. Move the slider for Balance to the center position.

   The issue is resolved

   The issue may have been caused by the audio balance settings.

   The issue is not resolved

   Go to the next troubleshooting step.

4. If you have a different smartphone, Walkman, or other device, connect the headphones to these other devices, then check to see if sound is heard from the headphones.

   I can hear sound from the headphones

   The playback device that was initially connected may be malfunctioning. Consult the manufacturer of the device.

   I cannot hear sound from the headphones

   The headphones may be malfunctioning, and service may be required.

Go to the Headphones Troubleshooting Guide