Chosen Solution
Hi, I replaced a screen to a P9 and everything else works fine but the main voice call microphone. Even the secondary mic on top of the phone is fine. Anyone else have had this issue? The phone chassis was badly damaged and had to change that also. I have tried: 2 different spare part mic/usb daughterboardsdifferent flex-cable from motherboard to mic/usb boardfactory reset I could not test the mic functionality when the phone came in as the screen did not work. There are ground pins on the mic/usb board that supposed to connect to the chassis goldplated parts. Maybe they are not getting connected and that would be the issue? Any help would be much appreciated. Thanks!
Check the microphone port hole at the bottom of the housing, probably blocked by something you need to peel off or something? On a S6 where I replaced the mid-frame housing I had to actually remove the whole microphone gasket from the housing.
