make these jumpers with any univarsal mic and your problem can be solve use a 4k ristance must in it as shown in diagram.and your mic problem in sony ericsson can be solve easly with this diagram in K790i.
mic prints came to these two parts so you can chek these parts also.
for more detail and new tips and tricks about this problem keep visiting this page we will update it timely with new diagrams.some related post are also given bellow you can read them also for more information.
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