I have a Droid Maxx that turned off while I was on my morning walk and when trying to turn it back on it just vibrated. Thinking it was dead waited till I got to my car put it on the charger it vibrated no screen came on nothing. Its been hours with me trying to charge it with a wall charger and usb port to a computer with no help. Usb would connect than un-connect and do that the whole time while connected to the usb port and while on the wall charger it just vibrates every minute. No screen action nothing just vibrates.
