i went to the apple store and they said mine was water damaged. to know if it is or not, look in the headphone jack and shine a light down it and see if the bottom is red. do the same to the charger jack. if they are red, water is in your phone, if it is no color, there is no water damage. but since they said mt phone had some damage i decided to still try this. and i worked so even if they tell you you have it, still try everything until you are possitive it wont turn bck on. :)