Original post by: Jack Cross ,
This is my problem, so it's sort of stupid I answer it, but I wanted to update it with my findings. Due to where I live, it's very difficult to get the device repaired at an Apple Store, do I haven't bothered. What I have found is that the issue is less and less noticeable the longer the screen is off, in which case it will slowly reappear during use. It also fades if the device is used for an extended period of time (≈1 hour). If you have this issue, don't worry too much about it if you can't get it fixed.