Question about LG CU400 Cellular Phone

1 Answer

Unable to hear when answering my phone

When attempting to answer my phone I am unable to hear the other person. I can only hear them with i place then on speaker phone and when I have my ear piece on. I am also unable to hear any audiable sounds when pressing the key pad.

Posted by on

  • 2 more comments 
  • Anonymous Jun 03, 2008

    Same problem here. Started on 5/31/08.

  • rieski Jun 06, 2008

    Cingular is telling me it's a hardware problem but it seems very strange this should be happening to multiple users in the same week. If I use the speakerphone, I'm fine but if someone calls me or I call them --they can hear me but I hear nothing.

    Has anyone found a solution? I love my phone and I don't want to buy a new one just yet.

  • Deserttrip Jun 07, 2008

    I had my CU400 replaced under warranty about two months ago for the same problem. One day I was unable to hear ANYthing dialing out or receiving **UNLESS** I had it on speakerphone. Today, my new CU400 started doing the same thing. I am so angry. The warranty period is now over, I have one more year on this contract and can't afford a new phone. I do NOT recommend this P.O.S. to ANY one. I have never had any other cell phone with issues before and to have one model have the same issue twice with two phones in just several months tells me a lot.

  • Anonymous Jun 28, 2008

    The ear piece speaker does not work, but the speaker-phone speaker does.
    Tried adjusting volume, removing and replacing battery, any and all possible setting adjustments - nothing has helped.



1 Answer

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

This problem has been driving me crazy too, but I found that if you connect to a blue tooth headset and when you are talking go to the "option" on the top right soft key and choose "use headset" you phone will start working again. It worked for me and I hope that it will work for you too.

Posted on Jun 20, 2008

  • haywoodjk Jun 23, 2008

    Amendment on what I have to do to correct this issue. It seems that this is a bluetooth issue. I don't recall having any problems until I started using the bluetooth feature. Anyway my phone went back to having the same problems with not being able to hear unless I had the caller on speaker. My first solution works, but only on incoming calls. That is so weird, but wanted to update everyone on the process.

    First Solution : This problem has been driving me crazy too, but I found that if you connect to a blue tooth headset and when you are talking (on an incoming phone call) go to the "option" on the top right soft key and choose "use headset" your phone will start working again. It worked for me and I hope that it will work for you too.



1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

A 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
The service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Good luck!

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

Why am I unable to answer my phone?

Unable to answer calls - Support forum

Sony Mobile
11 posts
Solved: Hi, my Z3 compact has been working fine but this evening I suddenly ... Thephone rings out but the swipe icons for answering the call simply don't ...

Unable to answer phone - Android Forums at > ... > Verizon Droid Incredible

Oct 24, 2010 - 8 posts - ‎6 authors
I am unable to slide the "answer bar" across the screen, to. ... I'm trying to determine if this is a hardware problem with my phone of if it is a ... Why am I unable to answer calls on my Galaxy Exhibit ...
2 posts
Mar 30, 2015
Can't answer incoming calls...
18 posts
Jul 24, 2014
Galaxy S5: Slide to answer problem
25 posts
May 11, 2014
Cannot answer phone calls
12 posts
Mar 7, 2013
More results from

Jan 01, 2016 | Cell Phones

1 Answer

Hi Jaison, Please could you help me with a problem with my Nokia 110? The problem is that I am able to make an outgoing call, but when the person answers I am unable to hear that person. He/she is able to...

it seems to be an hardware fault.since as you said you cant hear the caller, your phones headpiece is seemed to be faulty. you need to replace it form a nearest service center.also before that just try pressing the up arrow key on you phone while calling it may increase the volume if you accidentally decreased the headpiece volume.
good luck

Oct 06, 2011 | Nokia 1100

1 Answer


Since you neglected to specify the model of your Uniden DECT 6.0 system I can only suggest you select it from the list beginning here to download a copy of the manual.

May 27, 2010 | Uniden DECT 6.0 Cordless Telephone...

1 Answer

Nokia N72 mobile phone, am unable to hear dial tone when dialling and unable to hear incoming call answering a call and unable to from them when I make outgoing calls.

increase the volumes of ring tones ,unscrew the phone to check if the ringer is not faulty or damaged,repair or replace it ok

Jul 11, 2009 | Nokia Cell Phones

1 Answer

Answers two phones at one time

get the first one and second one and talk at one time

Jan 10, 2009 | General Electric 25922GE3 Cordless Phone

4 Answers

Works only in speaker mode

mine does it from tme to time and so does my friends.....unusual solution but banging the phone on a table quite hard a couple of times really does the trick.

Aug 22, 2008 | Sony Ericsson K800i Cellular Phone

1 Answer

Can't ring out

you should take the phone to a repair center and hve the phone check

Jul 17, 2008 | Motorola Mobility MOTORIZR Z3 Cellular...

Not finding what you are looking for?
LG CU400 Cellular Phone Logo

281 people viewed this question

Ask a Question

Usually answered in minutes!

Top LG Cell Phones Experts

Computer Repairing
Computer Repairing

Level 3 Expert

14641 Answers

Raphael Josiah

Level 2 Expert

86 Answers

Les Dickinson
Les Dickinson

Level 3 Expert

18424 Answers

Are you a LG Cell Phone Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides