I’ve recently swapped an 11 pro max display with an original display pulled out of another 11 pro max.
everything works 100% including true tone (copied the display serial numbers via one of the programmers available online). However, the display message is there.
In contrast, I swapped the display on another 11 pro max with a third party oled display. This one showed up absolutely no serial numbers on the display programmer which indicated that the IC on the display was “blank”. After restoring the display serial numbers on this 11 pro max’s display, all the notifications were gone however this display does not support true tone. The option is not there in the menu. Weird but verified.
AFAIK, for display calibration, no specialized HW is needed anymore with no 3d touch in the recent iPhones. All SW based. Given this, Apple should allow recalibration (pairing) of displays not purchased from Apple. Even if for a small fee.
For the first iPhone, which had the display swapped from another iPhone i.e. 100% original, why does Apple want to charge $500 CAD for display replacement prior to any other repair (such as battery replacement) when the replacement part is already 100% original!