I have a 15 month old S5 with no damage at all. One day it was working absolutely fine, then a half hour later nothing. The phone was off. It will not go on; it will not charge, vibrate, no lights - NOTHING AT ALL. I have called Samsung 5 times. I have done everything they have said; even went out to have the battery checked to see if it was that (also their recommendation) and nothing works at all. I am completely frustrated. Does anyone know why this is happening or how it can be fixed?