I dropped my iPhone in the snow about a week ago and it got some water damage. Today, when i plugged my iphone into the charger, it showed the battery with the low red battery symbol with the lightning bolt underneath it. It would be on for about 30 seconds then the screen would turn off for another 30-60 seconds before showing that screen again. Would this be the sign of a dead battery, or another problem? I'm going to leave it plugged in over night and hopefully it'll charge up. editt**also, it'll show this symbol with the plug with an arrow pointing to the lightning bolt before the screen goes blank(sometimes). And recently, it would randomly flash an all black screen every 10-20 seconds or so.