Bro I had the same problem but wat I did was I put my charger in the phone and I pressed the on and off button so many times until the battery with the circle in it as soon as u get to tht point keep pressing it then the battery will come back with a little bit of green init wen u get to tht part thn u have to hold the on and off button until the Samsung galaxy s4 pops up wen u get there ur done ur phone will work if it shuts off again and u have the problem do wat I sed over again