I bought a used iPhone 4S from ebay that I — for various reasons — won't be able to return.
My problem is that a weird red coloring , that I can best describe as a red cloud, appears on the screen when it's displaying a black background:
It goes away completely on lighter backgrounds:
And even goes away about 90 % if I put a light icon next to it — it's supposed to be just above the Music icon:
What is this and is there any way to fix it?
It doesn't make sense to me that it should be stuck pixels since they aren't really stuck... And I've already done all the usual stuff to fix stuck pixels without any success...
My problem is that a weird red coloring , that I can best describe as a red cloud, appears on the screen when it's displaying a black background:

It goes away completely on lighter backgrounds:

And even goes away about 90 % if I put a light icon next to it — it's supposed to be just above the Music icon:

What is this and is there any way to fix it?
It doesn't make sense to me that it should be stuck pixels since they aren't really stuck... And I've already done all the usual stuff to fix stuck pixels without any success...