iphone5 white squares across top of screen

I have just renewed the battery. Initially, the screen was normal and then, for no obvious reason, white squares have appeared across the top of the screen - sometimes strong and sometimes weak.

Thanks in advance for any help.

User uploaded file

Phone and Messaging seems the closest category to this issue.

iPhone 5, iOS 7.1.2

Posted on Jul 19, 2017 2:22 AM

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iphone5 white squares across top of screen

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