I have the is messese
I need remove this message from my phone
iPhone 12 Pro Max, iOS 14
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Either a third party shop fitted a fake screen (only Apple can fit genuine screens)
Or the original screen is faulty in which case you should arrange a service or repair
https://support.apple.com/iphone/repair/service
You can see additional service information within the following article:
Get your iPhone, iPad, or iPod touch ready for service - Apple Support