Chosen Solution
I replaced the screen and battery on my iPhone 6 about a week ago. Since then, every other time I boot up, the screen goes dark or has white vertical lines. I tried unplugging and replugging the battery cable with no response. Any idea what this is and how I can fix it?
The most likely case here is damage to the flex on the new screen. What happens if you put your old cracked screen back on, does this problem go away?
