This is the inner display panel that generates the images. If your screen shows black ink-like bleeding spots, colorful vertical lines, or is completely white or black, the LCD is broken.
18;write_to_target_document1a;_16DsaZfeFcrOwPAPwuiGiAY_20;56; 0;55d;0;399; gt c3312 samsung cracked
If you see black ink-like spots, vertical lines, or no image at all, you need a new Replacement LCD Screen Step-by-Step Disassembly Guide This is the inner display panel that generates the images