IPhone screen very dim after water damage? And a temperature warning?

I dropped my iPhone 4 in water about 2 days ago, and I tried turning it on today. It seems to turn on, but the screen is very very dim. Like, you can just barely make out the display when the device is held on an angle. From what I made out, there's a temperature warning on the screen. Also, the flash is slightly lit up? Is there anything I can do, or is this a lost cause?

Take it to a place that can fix theme and ask

Don't' drop your iphone in the toitty anymore:-)

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