My display was changed setisfit my display

That message means that the phone does not have a genuine Apple display and may not work correctly. If anyone other than Apple changed the display that would explain what you are seeing, because Apple does not sell replacement screens to anyone other than Apple Authorized Service Providers (AASPs).

There is no solution. If the screen was not replaced by Apple then Apple probably won’t make any repairs on that phone. You will have to live with seeing that message for as long as you own the phone. There is a slight chance that Apple will be willing to put a genuine screen on the phone, if there is nothing else wrong with it. Use the Contact Support link at the top of this screen and ask.

Yes, you lost your money. You can try to get it back. But there is nothing else you can do. If the phone works you can continue using it. That message will never go away, and some screen functions won’t work, but the phone should still be usable.

If you had the display changed, was the work done by Apple or someone else? I also notice that your battery needs charging soon!

Was the screen replaced by Apple or an Apple authorized service center? If not, you did not get an authorized screen.