If no sound can be heard from a single earphone, perform the following steps:

1. Go to Settings > Bluetooth on your phone or tablet to check the earphone connection status. If the connection fails, troubleshoot the issue by referring to Unable to pair HUAWEI earphones.
2. Update the earphones' firmware and the phone/tablet system to their latest versions.
    

   • If you wear a single earphone for a while, and then take the second earphone out of the charging case, but no sound is played from the second earphone, place both earphones back into the charging case and update the earphones' firmware to the latest version. Click here to learn how to update the WATCH Buds earphones.
   • If no sound is played from one of the earphones after pairing them with your phone for the first time, and you've tried following the onscreen pairing instructions, try removing both earphones from your ears and then putting them back on. If this also does not resolve the issue, update your phone/tablet to the latest version.
3. Take out both earphones and place each into the charging case to see if the indicator turns on. If the indicator does not turn on, it indicates that the charging contacts are in poor contact. In this case, clean the contacts and put the earphones back into the case. Skip this step if you are using the WATCH Buds earphones.

   

4. Take out both earphones and place them into the charging case, and close the cover. After 5 seconds, open the charging case, take out the earphones, and try again.
5. Restore the earphones to their factory settings and pair them with your tablet/phone again.

If the issue persists, take your device and proof of purchase to an authorized Huawei Customer Service Center for assistance.