My iPhone 4s screen is green?

I dropped my phone and it landed face down and didn't crack or anything but when I picked it up the screen was tinted blue with about half an inch of the screen it a grey line, sometimes it's blue for a couple seconds. Sometimes it I beat on the screen a little it turns blue longer but nothing has phased the line. Is there like a video on how to fix it or is there steps?

This is hardware failure. No video or tutorial will fix it.

Wrong category.

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