Echo while talking on phone

Why do sometimes hear echo when talk on my mobile phone NoStupidQuestions .goto this forum and see if it helps you out

iPhones have 2 microphones.
One is for feedback.
Try it without your case

Unpair and repair your headset.

Mark
Motorola Support

You can try adjusting the volume and see if any results. Try to verify if it is a hardware defect by using a Bluetooth piece and if you get better results.

This has no problem to do with the phone as far as i know.
It occurs normally when you are talking to someone who happens to be in a very quite and large room without that it empty. this is due to the empty vaccumm that causes the sound that is produced to be reflected back into themic of the phone and as a result causes you to hear your voice.
Also, another thing that causes it is when you talk to someone who puts the call on loudspeaker and there are multiple surfaces causing the reflection of the sounds you make.
In summary, there is nothing wrong with your phone and you just need to tell whoever you are talking to to try and move to an area that is a bit occupied so as to prevent echoes.

dial *18 talk and after a few seconds call will end automatically,then remove the battery for one full minute...then test it out

you may have to enable a feature called voice enhancing on your voice, the echo is sometimes caused by feedback from various sources. it should appear as a VE symbol when you have it turned on, this helped me greatly when I was going through the same prob, it also makes the phone reception sound better on both ends. you may have to call the phone company to check to see if they installed the lines right in the first place. Also if your phone has the ability to change channels you can keep switching channels until you find one that sounds better to you.

sounds like maybe you have two microphones running at same time?

If it's in warranty, I would send it back. It sounds like a problem with the built-in amplifier and possibly other components.
The squealing and echo is down to gain being too high, if you cannot set this on the phone, then it's a fixed value in the hardware. If you can, lower the gain. As for not being able to end the call, what about pressing the "c" button or the green button again?