My Iphone 3G s screen is completely dim. How can I fix it?

I dropped my iphone in water yesterday for a couple of seconds, picked it up, dried it off, then let it dry completely (to the point where the temperature was too hot for it to work) in the sun. It was bright all day after that, but then suddenly became very dim. It still works, I just can't read it very well. What can I do to fix this? Will I need to purchase a new phone?

Ok a couple things. You should never let it dry in the sun. You should either dry it with a hairdryer or put it in a bag of rice. That's what I did when my little sister took my iPhone 4S into the shower. But you already dried it, so go to settings, and find the brightness settings, and make sure the brightness is as high as it can go.

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