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My iPhone spent 24 hours in a river! The dock-connector was also damaged during the accident I had causing the phone to go into the river. It almost worked yesterday, white Apple, battery pic but not charging (just red vertical stripe at LH end) I even reached my home page a few times. Also had voice control window, but it wouldn’t connect to my carrier. Today however I can’t turn it off, and when I try to do that I just get a bright white screen, completely blank white, which dims when left untouched :-(

I’m amazed that you recovered it after 24 hours in a river! You should open your iPhone using this guide. Once you’re at a step where you can see the logic board, you should use some strong isopropyl alcohol (90%+) and a soft brush to remove any white-ish residue you see. Let the device dry to make sure all liquid is gone (this will likely take a day or two in a warm, dry place if the device is opened up. Putting the iPhone in a bag of rice can also be useful at this point.) When it is dry, put it back together, and you will have your best chance of it working. If you do all this and it is still behaving strangely, come back and update this question with the symptoms, and hopefully someone can diagnose what’s wrong.

did you strip the thing down and dry it through? i assume, you did. i would also try to swap the battery. it will almost certainly be shorted…

I’ve also done this procedure with no succes. But mine wasn’t dropped in the river. But i saw that one of the inner labels where pink so i guessed it was once dropped in water. So i’ve bought isopropyl alcohol(96%) and washed it good and brush it gently. i’ve asumed the battery wasn’t working soh i bought a new battery. when i got the battery it charged for a whole day with no succes. So i’ve again searched for answer and came upon a solution on ifixit that maybe replacing the dock connector might work soh i’ve done that also. I’ve installed the new dock connector it showed sings of life(the screen flashed 3 times with apple logo) and i though it was a problem. So i disconnected it from the power source(wall charger), when i plugged it back in no screen display. i was wondering what might this be