the phone worked fine all day, i put in my pocket and it turned off ;/ i had almost full battery, but i just thought maybe because i had wifi on it had died, so when i got home, i plugged it in, nothing happened so i left it for 2 hours to charge, it still wont turn on, and now, when i wiggle about the charger the red light near the camera flickers fast, and once i press the on button it stops but nothing else happens, the usb actually does nothing, and ive never had trouble in the past with this phone. I really need help please.