Samsung Note 2 N7100 Mic Ways Problem Solution
To begin troubleshooting , you may first inspect the whole microphone surroundings or connected components. Clean it if there is an oxidation build up occurs. You can check the microphone by using a multimeter. The connected components which are labeled according to their desired values are also a big help. You may also check and trace the connection line paths from component to component such as capacitors, resistors and filter coils.