How to fix water damage iphone 4?

So the other week I got my phone fixed and that was £70 and today my brother dropped it down the toilet so I was wondering if there was anything I could do with out my parents finding out the red light isn't on in the ear phone jack or the charger whole like there should be when it has water damage but my camera light is on any ideas to help?

I remember what I did to my phone too it dropped into a bath tub filled with bubble bath and all I did was, putting my phone in a freezer and once it is frozen, I knock my phone hard and i'll see some ice cubes fall out. After all that I'm going to blow dry it with blow dryer. Goodluck homie. Worst comes to worst you'll need a new phone

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