When only the LCD is broken
THE DIFFERENCE BETWEEN A CRACKED SCREEN & BROKEN LCD SCREEN
The LCD is the third layer on the iPhone, after the glass and the digitizer.
If the LCD screen appears white or discolored, with black and white lines or shapes across the screen,
that means the LCD is damaged.
It couldn’t happen on its own… This is damaged caused by pressure or it is dropped or impact to the screen
from an external source.