There are samsung models, which after changing the display lock the touchscreen when
 

Here in Brazil, we bought screens for samsung from china as original but some models (j6, j8, a50, a30, m30, j7, j7 neo, j4) that have the screen replaced are not working after the automatic software update. You need to downgrade or write a rom that makes the touchscreen work again.
Why is there this incompatibility of android with some screens?
Many of these screens are actually quite similar to the original ones.