My iPhone 4s' brightness is turning itself low by itself? - 1

How do I fix this? Is it a bug? I have the iOS 6.1.3 installed.
I did drop it in water like 2 weeks ago but I made sure all the water came out, my step mom dropped her phone in the toilet like a year ago and till this day it works perfectly fine! So why is mine having problems?

I'm sure you've done this already but if not, check your brightness settings. If the 'Automatic Brightness' switch is on, then just flick it off and you should be fine. Other than that, I can't think of anything besides backing up and restoring it. Sorry and good luck!

You will have to switch off auto-brightness button in the settings<brightness and wallpaper

Right under where you adjust the brightness there's an option to turn on something called 'auto brightness' if it is on, it will adjust the brightness for when you are in lighter and darker areas, if you want to just keep it on high brightness, turn this OFF.
That should work.

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