Chosen Solution
I dropped my phone and it cracked on the edge, after it started flickering on the bottom half, now its permanent
You may have damaged either the screen cable or the pixels inside the display. Can you provide pictures of the damage?
You have unfortunately damaged the LCD within the phone. Thus causing the flickering or permanent black or green line. If you turn the phone off and look under extreme light you will notice a crack on the LCD. Best option for this is a replacement screen.
