It seems to be a problem that almost every Samsung Galaxy S23 Ultra user encounters that the display screen inside the bottom of this flagship model seems to be bent or curved up and does not fit snugly into the internal device. (I don’t feel it if I touch it because it happens under the glass screen) which can be easily noticed. When using a light to look down, however, Samsung Taiwan has previously said that what is encountered will not have any problems with use since the Galaxy S22 Ultra model that is found in some models as well.
The Samsung Taiwan website explains that the cause of the screen wrinkling or bending inside is that the screen panel is composed of multiple layers and layers. It consists of a tempered screen cover that attaches directly to the screen panel. which this design is made for a waterproof and dustproof structure as well
In fact, what happens a lot in the Galaxy S23 Ultra has been there since the Galaxy Note 10 until the Galaxy S22 Ultra, but the users who encounter it are very few until the S23 Ultra that meets a lot, but at the end of Samsung I confirm that there is no problem in use.
source : Samsung, Sammobile, Reddit