I just completed a broken screen and battery replacement repair on an iPhone 5. I initially got a double stripe down the right half of the screen when I turned on the phone. I then consulted this blog and saw that others had similar experiences. I then re-opened the phone and reset all of the cables that connect the screen to the main body of the iPhone. I now have three lines towards the top of the screen and the bottom of the screen but significantly fainter than the original double lines that appeared the first time. I suspect that the connectors are extremely sensitive and can be easily damaged. At this point, I can live with this screen, it's not perfect, but it's fully functional. It's better than a cracked screen. Now hopefully I won't be looking for a recharge before the end of the day. Update: Good news! After recharging the phone fully, the white lines disappeared!