How to solve the current sound of microphone plugged into earphone?

The microphone has current sound. The solution is as follows:

Tools needed: cigarette box, tin foil, blade.

1. As shown in the figure below, pry open the microphone housing of the microphone.

2. Take out the microphone pickup from the groove, and be careful not to break the wire.

3. Put the cigarette foil paper completely into the groove on the back of the microphone. When you put it, the tin foil is outside and one side of the paper is inside. Don't turn it upside down in case of short circuit.

4. When finished, put the microphone back in its original position. Remove excess tin foil with a blade.

5. Put the microphone shell back. As soon as the microphone is plugged in, the current sound will be solved.