Screen does not work after replacement

Good evening, everyone.

The phone in question fell (the owner said he doesn't know exactly how and where it fell).

After replacing the diplay, including the frame, the phone continues to behave abnormally. I reopened everything and checked to see if any of the connectors were miswired, but everything seems fine. I disconnected and reattached the cable connecting the display and cleaned it with isopropyl alcohol. It continues to behave in the same way.

The site from which I got the display is https://www.e-pol.it/ . I find it reliable, I have always been comfortable with it, had already ordered the same and identical item and repaired another Samsung Galaxy A12 without any problems.

I leave attached a video showing the way the phone behaves (I put my hand in front to cover a child's face in the screen lock picture) and photos of the internal components: https://drive.google.com/drive/folders/1...

UPDATES 19/12/2023

So I have some "updates." In disassembling and reassembling, I noticed that the cables have different initials:

- The abbreviation of the new display is "SM_AO22F."

- The abbreviation of the old display I replaced is "SM-127F".

I leave attached photos: https://drive.google.com/file/d/1sN9wLwy...

I saw that the site sells two types of displays, one with FLAT A022F and the other with FLAT A127F. I don't really know the difference, I have asked here on iFixit in the past and was told that some "components" of the Samsung Galaxy A022 display can interchange with those of the Samsung Galaxy A12.

(see here: What is the difference between these two types of display?)

Remembering that I have another Samsung Galaxy A12 at home that is fully functional, I went to check what initials it had and it has "SM-127F," which is that of the old display.

My suspicion is that they sold me the wrong display or otherwise got something wrong (I am sure I ordered the one with FLAT A127F, I have the proof in the order history). My idea to see if this is indeed the case, or at least to rule it out, is to try to put all the components in this other fully functioning display as soon as I can (I'm replacing piece by piece from one frame to another). If everything works, the problem is the display.

I will let you know, In the meantime if you have anything to saugger me I would be grateful.