So I got this iPhone 6 from my cousin, and I replaced the screen because it was shattered. It worked well for a while, and then after several months the screen went black. I noticed that I could barely see the screen in pitch black, so I replaced the screen again, and it didn't fix it. So I was wondering if anyone knows what the problem would be. Something wrong on the motherboard? Maybe a broken backlight chip? I just need to know what to fix so I can fix it and give it to a friend as a birthday gift.
Read more: My iPhone 6 screen is super dark, you can only see it in pitch black after your eyes have adjusted?