Thin lines on screen
I have two thin lines on my iPad (IOS12.1.1) screen. One going vertically completely from top to bottom, the other horizontal and only about half way. They colour themselves to match the background (so they are usually white, but in the pictures below they are green because of the lock screen image).
Anyone know what these might be and if I can fix it?
You can see photos of the issue here:
Thank you for your help.
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