Make sure your headset and the mobile device are within the 10m range to each other
Increase the volume from your Bluetooth device and Noise Buds VS404
- Ensure volume is set to maximum through Mobile Phone and ear buds both
Try with a different music player
- Sound problems may occur due to an issue with the Music player, try playing the same track with a different music player to notice a difference.
Ensure cleaning of eartips
- Not use any sharp object to clean ear tips. It may damage the sound mesh.