If you are facing a low sound in your earbuds: 

• Make sure your Earbuds and the mobile device are within the 10m range to each other
• Low battery level may cause the disconnection from the mobile
• If the battery level is less than 5% charge the Earphones
• If the battery level is more than 5% proceed with the next step

To check Battery level 

• Go to settings of your Bluetooth device 
• Click on the Noise Buds VS102
• Check the battery percentage

  Note: Visibility of the battery level is subjective and may vary brand to brand

a) Ensure volume is set to maximum through Mobile Phone and ear buds both

b) Ask CX to use suitable size of eartips

c) Ask CX to use other music APP/music player as different songs/videos app have different audio quality with different Mobile Phones

d) Ensure cleaning of eartips. Ask customer to clean it carefully and validate this by image