What's the reason for developing blue lines on the screen of my Xiaomi Redmi 2?

I dropped phone once then after i switch on my phone then there are some blue lines developing on the screen please tell me the reason and solution for that problem

Hi Athisaya. I'm afraid the phone may be damaged due to the drop. I highly suggest having it check on a service center. I hope it's just lose connections, other than that, you will have to change screen.

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