I just dropped my Samsung J7 Duos while it was attached to a charging cable. Now it will not turn on or do anything. The screen is black. Intermittently the phone vibrates and there is a flash on the right hand side of the screen but that is all. I have tried calling it and it goes straight to my provider’s answering service, it does not ring. The screen is not cracked. There was about 30% charge in the phone.