My iPhone 4s got wet, how can I fix it?

What happened is that when I was on my way home, it started raining. By the time I got home, I checked my iPhone and I can see that it's wet.

I quickly used a clean cloth to wipe it but I noticed some water got into the speaker and mic. I sucked the water out using my mouth but it's more difficult to for the mic.what's bad is that I forgot to turn it off.

I checked if there are damages and I found out that the mic is not recording any sound. I kept using the voice memo to record but when I play what I recorded, I can only hear very faint static noise at loud speaker at max volume.

Later, my friend called me and when I answered it I was surprised that he can hear what I was saying. I quickly ended the call and I used the voice memo but the results are the same, same faint static noise.

The next day, I tried to use the voice memo again but my phone slipped from my hand and feel to our wooden floor while recording, I played what it recorded and amazingly, it recorded a very faint thud similar to what I heard when it fell to the floor. Just to make sure I started recording again and I repeatedly hit it against our floor with a unique pattern just to be sure and when I played what it recorded, I can hear the pattern I was doing but the sound is very faint.

My problem is that I don't have the tools and knowledge on how to fix my iPhone. There are even no Apple Technicians available for me to inquire here.

My questions are:
-Will the mic ever work?
-When will it work again?
-What can I do to for it to be fixed?
-What are the possible problems that caused the mic to malfunction?

Put it in dry rice for 12-24 hours overnight would be good. I did that to mines when it got wet and it worked.

Your probably screwed. Water is all up inside of it and leaving it on makes that much much worse. Had it been off you could of dried it prior to applying power and had little or no adverse effects. You most likely have permanent damage that can't be fixed. Try the rice another suggested. Also try putting the phone in the fridge for a day or two, fridges excel at removing moisture.

Rice method