Question about Uniden DCT646-3 Cordless Phone

2 Answers

My DCT646-2 no one can hear me.

I have a very similiar problem with this post. Both my phones did the same thing. I unplugged the batteries and the bases. When I plugged everything back in my 646-1 started working again but my 646-2 still doesn't. It will ring, show the caller ID and I can hear the person but they still can't hear me. Help please!

Posted by on

2 Answers

  • Level 1:

    An expert who has achieved level 1.


    An expert whose answer got voted for 2 times.

  • Contributor
  • 1 Answer
Re: My DCT646-2 no one can hear me.

Take it apart and clean the mic with alcohol. (I took out a black round cover it had on top to reduce eco)
Worked for me.


Posted on Jan 15, 2008

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer
Re: My DCT646-2 no one can hear me.

We had similar problem with XS916 dual cordless models, first one handset went extremely faint for external audio output, then just recently the other handset went exactly the same way, making both pretty well inoperable. Found this blog suggestion worked well, took both units apart (2 micro screws under batteries, then a further 5 inside), took rubber protector off microphone at bottom of unit, gave clean with small art type paint brush & methylated spirits, carefully put back together, both units now work fine as new.

Posted on Apr 18, 2010

Add Your Answer

0 characters

Uploading: 0%


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


3 Points

Related Questions:

1 Answer

When people call us, they can't hear us, but we can hear them.

can only be two things.

You activated the MUTE button.

The Microphone is broken.

Disconnect it from the power outlet, remove the battery and count to 10, replace battery and plug back in.

Jan 27, 2016 | Vtech Phones

1 Answer

Why can't the called party hear me?

Called Party Can't Hear Me - Google Product Forums

May 18, 2015 - 18 posts - ‎7 authors
I can place calls using my OBi100/Google Voice phone system and hear the called party, but the party cannot hear me. This problem began ... Using Google voice the people I call can't hear me and I ...
13 posts
Apr 27, 2012
Can't hear caller when calling phone from Gmail
6 posts
Sep 7, 2010
When using Phone Call from gmail, I can hear the person ...
45 posts
Aug 28, 2010
Can't hear me!!!
85 posts
May 8, 2009
More results from

When making calls, the other party can't hear me. - iPhone 4 ...

Jan 07, 2016 | Phones

1 Answer

Cordless phones

1) unplug all phones
2) plug them back in and check line.
If you still have the issue,!take a corded phone with. Phone jack coed to your box on the outside of the house. Usually gray, unscrew the first box - you'll see modules there - the one with the last four of your phone number is the module we'll use. Follow the directions on the box to open that module - plug your phone into the module. Here's the important thing - if you don't hear static, then the problem is from inside your house. If you call att to come out they will charge you - but that's the whole unplug the phones and centralize your base better. However, if you still hear static in the outside box, it's an att issue and have to come out at no charge.

Jun 24, 2014 | Panasonic KX-TG1033S Cordless Phone

1 Answer

When we are talking to someone they say they can`t hear us

Today, Nov 5, 2011, we had the same problem. I put the handsets in the bases and unplugged the power cords from the outlets. Then I opened the battery compartments and unplugged the batteries. I then replugged the power cords and put the batteries back into the handsets. I put the handsets back onto the bases and waited for a couple minutes. Then reprogramed the date and time on the # 1 handset. I then placed a phone call to an outside phone and VOILA! They could hear my voice! Hope this helps Earl Sealy even though it is sorta late.

Sep 26, 2011 | Vtech Cordless 6041 Phone

2 Answers

I just bought Model D-1660-2. I cannot make the second handset work. I have charged the battery for more than 20 hours. I set all the Handset setup modes as instructed in the manual. Works for the main...

Welcome to FixYa.

Reset the units/set up by doing the following:
  • Turn OFF all the HANDSETS.
  • Remove the batteries of the HANDSETS.
  • Unplug the power source of the BASE.
  • Unplug the phone line of the BASE.
  • Let it stay that way for 30 mins.
  • Insert the battery again of the HANDSETS, make sure it is charged properly.
  • Plug back the power source of the BASE.
  • Plug back the phone line to the BASE.
  • Register any handset that is unregistered (refer to manual).

Keep me posted.

Sep 10, 2011 | Uniden Cordless Phone

1 Answer

When i call, i can hear the person that i am calling but the person that i called can not hear me - what should i do

If it is a cordless or cellular pull battery wait few minutes and reinstall it sound like bad reception. Corded unplug phone main line try reconnect.

Jul 20, 2011 | Phones

1 Answer

One handset out of 4 receives a call but when green talk button is pressed (answering) nothing but dead air, can't hear who is on the phone nor can they hear me. I have tried disregistered the handset and...

It is likely your phone has a mouthpiece or ear piece problem that is why the reciver can't hear you.So your need to take the phone to the nearest repair office for it to be changed.

Jan 09, 2010 | Uniden TRU9480 Cordless Phone

1 Answer

I have a GE model 28213 DECT 6.0 home phone that I can't get to ring when someone calls. I can set the phone to ring 5, but when I call the phone it does not ring it just flashes.

I have a GE model 28112EE2-A DECT 6.0 with a similiar problem. I have had it for over a year and sometimes it won't ring but it flashes. What I did was unplugged the power for about 20 seconds and plugged it back in. Then it was fine. Hope that helps.

Mar 05, 2009 | GE Phones

3 Answers

Vtech cordless phone appears to be mute

Try the "hard reboot". /1/ Unplug power from base station. /2/ Disconnect battery in each handset. /3/ Wait a few minutes. /4/ Reconnect battery. /5/ Re-plug-in power to base station. /6/ Place handset in base station, and wait a few minutes for it to recover.
You may have to reset time/date and/or the handset ##.

Aug 24, 2008 | Vtech 9009111 Cordless Phone

1 Answer

Cannot hear people talk

Sad but Uniden's are typically cheaper throw away phones. BUT try unplugging handset battery, letting it sit a while and reconnecting battery. Also double check any volume settings.

Apr 23, 2008 | Uniden Cordless Phone

Not finding what you are looking for?
Uniden DCT646-3 Cordless Phone Logo

279 people viewed this question

Ask a Question

Usually answered in minutes!

Top Uniden Phones Experts


Level 3 Expert

93738 Answers

Dave Ellis

Level 2 Expert

84 Answers


Level 3 Expert

7983 Answers

Are you an Uniden Phone Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides