If nokia C1-00 mic is not working or sending low voice to the destination then you can solve mic problem with these few steps that are given bellow in diagram. look at the diagram and do following steps step by step
.In pictures you can see two main colors blue and red these colors are identifying outer and inner points of mic.outer is a ground point of mic while inner is a + point of mic. remove the old mic from board and then check the path as shown in diagram jumper new mic with these parts and if parts are also broken due to water damage then big round points are identifying locations where you can apply jumper and these are test points for mic problem in nokia C1-00, see some points can also be scratched. So scratch them slightly and make jumper at that point.
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