I was on my phone walking back from class when the screen went black and the led was flashing from blue to cyan, not quick but it wasnt slow either. I tried turning the phone on and nothing was happening except the led would just be green. It would stay green and wouldnt turn off. I took my battery out, tried to charge it, tried booting in safe mode, just about everything and it still wont turn on. I have tried clearing it with the volume down+home+power ive tried just about any combination of buttons possible. I need your help guys, please!