First off, hello this is my first time on this website!! Hope you can help! My Iphone 3g just happened to fall in a pool....And i tested the motherboard and it works fine in another phone!!! what else in the phone would stop it from completely booting up while charging? The apple symbol comes on then goes off after 30 seconds. The charging port i already replaced. Could it be the battery?? Or the Headphone Jack??