Chosen Solution
After I replaced my screen it wasn’t turning on, I broke my old screen by dropping it Inside looks like this
Sometimes it’s just the screen that breaks, some other times a drop carries along other issues. This may be one of those cases..check with a PC/Mac if the iPhone is detected by iTunes at all. If it is, shine a bright light to your screen to check if it’s a backlight problem, you should see a faint image on screen in a darker environment. If iTunes doesn’t detect the iPhone, then it’s virtually dead. In both instances I’m afraid you’ll need a logic board repair.
