How dose an Apple genius check for a water damaged iphone?

SO I dropped my iphone in the sink at work and its working perfectly fine. I know my warranty is going to be finished soon and I want to switch my iphone 4 for a new one before the warranty ends. I opened my iphone ripped out the water damaged marks and put in blank pieces of paper. If you shine a flash light in them they don't appear to have the water damage marks activated. So do the apple geniuses open the iphone and check or just shine in a flash light. Because if you open it its obvious I have tampered with it. I've had friends that have gotten new iphones on the spot.

And would anything happen when the apple head quarters opens the iphone and finds its been tampered with?

They have to take the phone apart to see what's wrong with it. They aren't just going to shine flashlights to determine problems.

You see the clue is in their job title - Genius. If they didn't know about these tricks by the consumer to fool them they'd be called Apple Thickos.

Here's the place to teach you do that well
http://iphone.pandaapp.com/news/12162012/How_to_Save_a_Wet_iPhone_or_iPod_Touch_Even_iPad.shtml

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