* Echo: Lower your cell phone Bluetooth audio volume to 25% after the call connected. You only require to setup once. Also, Bluetooth audio volume setting won't affect your cellphone normal audio volume.
* Static noise: Please use 5V power adapter comes with your cell phone. Most of the aftermarket(cheap) 5V power adapter will introduce noise in audio.
* No Audio: If ringing and dialing OK but NO AUDIO, please make sure your cell phone audio's option is in "auto" or "Bluetooth"
* Audio too low or no ring: If your home phone comes with an external power supplier, please use external power.
If still have problem, feel free contact us at firstname.lastname@example.org