Cell2Jack

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  • Home
  • Setup
  • buy
  • FAQ
  • Contacts/support
  • Features
  • Tips
  • User Review
  • Privacy Policy
  • Bluetooth pairing
  • make call
  • assistant
  • 5V
  • Audio is bad. How to fix it?
  • CallerID
  • Share Cell2Jack with two cell phones
  • No dial tone
  • Second
  • ​How to use cellphone answer call while it is paired to Cell2Jack
  • no-ring-fix
  • VOIP app compatibility
  • Factory Reset
  • answer
  • FCC,CE,RoHs certifiation
  • video
  • dialing issue
  • wall_phone_socket
  • flip
  • RotaryPhone
  • update4_mac
  • setting
  • update4
  • return
  • senior
  • Return & Refund Policy
  • Contact US
  • commands
  • How to repair Cell2Jack to a new cellphone
  • Audio
  • echo
  • google store
  • manual
  • ringing issue
  • instock
  • The billing Terms & Condition
  • Utility
  • DTMF
  • Buyshopify
  • BuyNew
  • USB
  • Call drop
  • landline number porting
  • power

Audio is bad (or no audio). How to fix it?


* Static or humming noise:
Most likely, the noise is coming from AC power.
​1) Please use 5V power adapter comes with your cell phone.
 Most of the aftermarket(cheap) 5V power adapter will introduce noise in audio.
2) you can reduce power consumption of cell2jack by lower "off hook power" to reduce AC noise:

Press 71# from the home phone keypad while off hook to lower "off hook power" (you should hear an acknowledge tone after enter the keys) then power down/up.
. Click here for instruction how to adjust "off hook power" to reduce noise

* 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.
or you can download our PC utility to increase off hook power

* Broken Audio:
- Update firmware and lower the MIC volume to min in setting. (Some Cellphone's Bluetooth MIC volume is set too high and cause audio distortion and echo. )
-  Reboot your cellphone. Some version of cellphone( or APP)'s Bluetooth audio will be struck after on for a long period of time.


* 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.
Also, some cellphone's Mic is still on while bluetooth enable.
please click here to see how to adjust cellphone's MIC

If still have problem, feel free contact us at support@cell2jack.com

If you have ver 4.0 or higher (ver number is printed on the back of Cell2Jack), you can download our PC utility to adjust Mic, speaker volume, robot call block functions.....
Click here to download PC utility

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