What is mouthpiece?
Mouthpiece is a small microphone which is located at the base of every phones. Mouthpiece collect sounds within the surrounding through (sound records) and also intercepts voice to transmit to other mobile phone users during call.

How will you know your phone is having mouthpiece issue
Through sound recoding and call making:
1). Sounds recording: if you try recording your voice and it not working then you should know that your phone is having a mouthpiece issue.
2). Call making: if you make an outgoing call or someone calls you and you can hear the opponent voice clearly but the opponent can't hear you, then you should know that your phone is having a mouthpiece issue.
So, how can you fix your phone "mouthpiece"? It very easy as ABC if you have the below requirements.

Requirements to fix a phone mouthpiece
1). Soldering iron
2). Screw driver
3). Mouthpiece 
4). Candle and matches 

How to fix mouthpiece for Android phone
1). Remove your sims and memory card
2). Unscrew the phone using phone screw driver
3). Use your finger or plastic rubber to open the phone from side
4). Locate the mouthpiece, it usually at the base of every phones
5). Remove the network antenna and detach the little panel from the flex.
6). Light your candle and heat the mouthpiece from under and remove it. Don't let the light from the candle come too close to the panel.
7). If the "mouthpiece" is round you can replace it with a wire mouthpiece by soldering the positive wire which is "red" in the middle and solder the negative wire which is "black" on the outer part.
8). Return everything back and turn on your phone
9). Test it through sound recording or try calling someone.

Note: if you open your phone and you saw this kind of mouthpiece "square" or "box" quickly close the phone and take it to a phone repair engineer, because this mouthpiece requires special knowledge to fix it.

Watch video here:

How to fix mouthpiece for china phones
1). Remove your sims and memory card
2). Unscrew the phone using phone screw driver
3). Use your finger or plastic rubber to open the phone from side
4). Locate the mouthpiece, it usually at the base or front of every phones
5). Desold the "mouthpiece" from the panel and replace it with a new one.
Don't interchange the wires, sold it the way you remove the old "mouthpiece".
6). Return everything back and turn on your phone
7). Test it through sound recording or try calling someone.

Watch video here:



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