[AC Question]

I have a Samsung Galaxy A3 and the mic was working fine while recording videos. Today was raining and I guess some water got inside the mic or something and now there is a very loud static sound which I don't know how to stop. There is only static sound when recording videos but there is no static sound while I'm making phone calls. I don't know how to solve this issue as it is the first time it has ever happened to me. There is no static sound when I use the earphones with the mic (the earphones which came with the phone)