How to remove water spots from my iPhone 5s screen?

I spilled water on my iphone 5s yesterday and now half of the screen is grey and the other half has a blue tint that reaches halfway. I tried rice but all it did was make the water seem to drip lower a little, leaving waterlines. My mom says to just leave it out and that's what I did in the afternoon, I left it out in the sun and where there was a breeze. The blue tint has shrunk a little but nothing else has changed. What I want to know is if leaving it out to dry by itself will work and how long will it take?

Get a new screen

You'll need to replace the LCD/Digitizer assembly.
This can cost quite a bit, so expect to pay a decent amount of money.

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