My iphone charger explode and my iphone got this?

It seems like inside that red box is duplicating that screen part in blue box. Can somebody help me how to fix it. I hope screen replacement will help me but i'm not sure about that. Please give me some advice. My device is iphone 4 running ios 7.1.1. I appreciate any help.thanks.
My iphone charger explode and my iphone got this - 1

Make an iTunes and iCloud backup and restore the phone to factory settings. With it fresh and empty see if this problem persists. I don't think it will. Best luck.

Factory reset your phone or plug into your computer and put a fresh install of ios7 onto it

Try restoring from a backup. If that doesn't work then set it up as a new phone. If that doesn't work then you're going to have to get it fixed.

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