On the Apple technical support appeared A new article, which refers to the need to use the original displays for iPhone 11, iPhone Pro 11 and 11 Pro Max. In addition, the repair should be performed by specially trained staff or Apple authorized service centers. Otherwise, you will encounter an unpleasant problem.
If the system detects that the display is not changed by an authorized center (does not matter, the original parts have been used or analogs), it will report that the screen can be unoriginal.
Post will hang in the Notification Center for four days, and settings - 15. After that, a notice will appear if user open main → This device. That is, when trying to sell your iPhone you will not be able to hide that changed the display (if not, contact an authorized service, of course).
If your problem sounds familiar, you are not mistaken. In August it was reported that since the iPhone XS / XR kupertinovtsy began to use battery protection - it works on a similar scheme.