HELP! iPhone was drowned, Home button stopped working.

Last morning, I dropped my Iphone 5s into the water for 1 second.

I turned off it and started to disassemble it.

The water even couldn't get into the motherboard side.

Everything seemed fine except the Home button.

1. My Iphone was dropped into the water

2. The water even couldn't reach to the motherboard.

(Only one of three water indicator turned to red)

3. Everything seemed fine except home button.

4. It's not working, but the touch id function is working.

What should I do with it...?

I don't want to loose both touch id feature and home button function...