My iPhone 4 has blue vertical lines down the screen?

So, I bought this iPhone online about a year ago, cracked these screen once, had it replaced and now all of a sudden it has these blue lines running vertically down the screen. I didn't drop it or anything, I still am getting text and email alerts as well, so everything is working fine, just the screen seems shot. No clue what to do, anything helps if you know about this, thank you!

Can you post a screenshot of what it is? I think it has to do with the iPhone being heated too much or having UV rays constantly on the screen. This creates artifacts on the screen itself which is represented by the blue lines.

There's nothing you can do to remove them, other than replacing the screen again.

  • Why does my iPhone 5s have multiple vertical lines running across it? The lines have appeared a couple weeks ago and I thought nothing of it. The lines are enabling me from being able to tap certain places on the screen. Also, the phone occasionally spazzes out and presses random places on the screen… More and more lines are appearing daily… Please help!
  • Vertical lines down my iphone screen? I woke up this morning and checked my phone, only to see that I have about 10 vertical white lines going down the front of my phone, they don't go either, even I'm on facebook; they're there, same when I go on camera. I restarted my phone but they still won't go, does anyone know what this is?
  • Vertical green lines appear on my Iphone 5 after dropping it on concrete floor? I dropped my Iphone 5 on the floor and then when I picked it up, green vertical lines appear. It goes away after turning the device off however, the green lines appear when the device is switched back on. What should I do? I live in Australia fyi
  • Screen of my iphone is showing vertical lines on the right side? The screen of my iphone is showing vertical lines on the right side. The left side seems to work ok for example when I try tu unblock it slides only halfway, I can play music and rewind but not forwardwithout unblock Siri can be accesed but doesn't respond.