If you face no working your samsung galaxy s3 microphone At First Check this
1. Change the microphone first with new one.
2. Clean microphone area on the motherboard.
3. If upper two step not work, bellow image follow and change these parts.
1. Change the microphone first with new one.
2. Clean microphone area on the motherboard.
3. If upper two step not work, bellow image follow and change these parts.
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