Answer to: water damage in down part and detailsHave you let it dry? As you surely have heard by now, don't turn it on! wait at least 3 days with your cell phone open. The same thing happened to me 3 weeks ago and it's working again. If it does turn on after 3 days but it doesn't charge, it might be your battery, that's what happened to me. To check if it indeed is the battery you have to download the iPhone Configuration Utility, available directly from Apple in their website. Check the error log and look for battery errors. When I took it to the repair center they assured me that the problem was with the dock connector, so I would try that also if I were you. Try to test the parts before you buy them! Hope this helps, I went through the same as your sister, but Don't Panic!.
Answer to: iPhone 4 Contact Clip what for?This pin connects the GSM antenna on the back plate to the phone. Without it you would get a very weak signal.