Keywords: HF026, headphones, no sound, no audio, one side, one earbud
If sound only comes from one driver, please:
1. Please ensure the 3.5mm jack is plugged tightly in the 3.5mm audio port of the target device.
2. If possible, please check if HF026 works fine with other device.
If neither of the above works, please contact firstname.lastname@example.org for support.