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原帖由: con ,

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The skilled people your referring to must not be very skilled at all.

there are two mics in the 4s one attached to the dock and the other is located on the volume silent and headphone flex..

The little pin hole beside the headphone jack is were the mic is located I agree about cleaning the little hole with a pin but if that fails then a replacement flex is needed.

When u put on loud speaker it switches to the top mic[guide|7281]

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