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[SOLVED] – Samsung Galaxy S4 Microphone Faulty/Not Working

13 Mar
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I recently purchased a Samsung Galaxy S4 with a broken microphone which I was hoping to fix. When I made phone calls I had to put the loudspeaker on every time so the other person could hear me as the other microphone used without the loudspeaker was not functioning. I purchased a new ribbon cable with a microphone and charging port and replaced it. I then tried to charge the phone and got the following message on the phone:

Info: Charging paused. Battery temperature too low.

See photo:
20150310_180011

The device would not charge at all due to this error. So I then put the original ribbon cable with the old microphone and charging port back in the device and re-tested. The phone would charge as normal. The microphone was still faulty.

I did try cleaning the mic port with a small pin/needle and this did clear some dirt away but this still did not solve the problem

I then tried a full factory reset on the phone doing this by pressing the

power button + home button + Volume up button (whilst the phone is off.)

You can the do a full factory reset – I believe this is different from the one in the “settings” on the phone as I tried that and the microphone still would not work.

I found that when a full factory reset was done by holding the above buttons down and completing the factory reset and making a phone call the microphone started to work again.

So my beliefs so far is that the microphone issue is actually a software problem with Android OS or possibly an application conflicting with the microphone.

So from doing this the microphone is fully working again and the problem is solved.

I hope this helps someone else with the same issues.

 

Some extra photos that you may find useful:

20150310_181355
20150310_181101_2

20150310_181606

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  1. hey

    13th September 2019 at 13:46

    My mic for phonecalls does not work after replacing the usb board like you. the speakerphone mic does work. so i can only make speakercalls. but even after a factory reset it did not fix the phone. i am wondering if there is a wire or cable connection that i could replace to fix it. is the phone mic connected through any specific wire? charging, and all other features do work so it is just the phone mic that is broke.

     
    • nerd

      30th December 2019 at 21:32

      Hello and sorry for delay. Hopefully you have this issue resolved now. Check all the connections and ribbon cables. It is easy to not plug a ribbon cable back. There is a black long one in the top corner of the phone. You can always unplug and blow it then re plug in you will know if it clips in nicely. Thanks and have a happy new year.