I drop my phone lot and chances are there that it was exposed to water. Now, whenever I speak to someone over phone my voice is very low and it appears to them that I am speaking from a cave
I guess the microphone has gone bad. Is it possible to replace the microphone? and has someone done this successfully. Feedback please

I guess the microphone has gone bad. Is it possible to replace the microphone? and has someone done this successfully. Feedback please