If the screen is not staying on use some crazy glue around the edges of the screen on the back....that or place duck tape strips around the top and bottom of the screen. Problem solved.
The front of the screen is completely shattered too. I will look into getting a replacement screen in a few months and trying to repair it to have as a backup phone.
Does it still turn on ? Does it respond to if you plug a USB cable in it ? If it does, then all you need is the screen kit, about $200....(or just watch for a used one on ebay to replace it, then sell yours on ebay)