how do I get rid of display message

Based on your situation, I recommend service.

Service Checklist:

• iPhone service pricing.
• Check AppleCare Coverage.
• Get your iPhone ready for service.

Click ▶︎ Start a Service Request. ⚛️

Need more help?

• Call 1-800-APLCARE. 📞
• International Support. 🌐
• Contact Apple Support. 📝
• Live chat using Messages. 💬

Click ▶︎ Check Repair Status. 🔧

If you're getting a message that display can not be confirmed to be genuine, and you had the display replaced by someone other than Apple or an authorized service provider, you don't.

If you had it replaced by Apple or an authorized service provider, take it back to them.

If you did not have the display replaced at all, make an appointment at the Genius Bar. That indicates a hardware failure.