C-FLOW · H03 · Connection & Pairing
One Earbud Has No Sound
Place both earbuds in the case and check that each sits against its charging contacts.
Close the lid for a few seconds, then reopen it and reconnect.
Check the audio balance and output settings on your phone or computer.
If one side is still silent, remove the Bluetooth pairing record and pair C-Flow again.
If the same side remains silent across different devices, email support with the affected side and what you have tried.