This is a manufacturing defect and these phones should be recalled. Similar issue is occurring with the Z-Flip along its hinge. Here is a photo of my Z-Flip. As you can see there are two small cracks, about 4mm each. My guess is these will migrate and expand across the hinge with time. Speaking with Samsung Support and their affiliated local shops in the States, these screens are color specific (since they replace the back shell when replacing the front screen) and the black ones are on back-order. Generally speaking, the customer service is awful. Rather than a one-stop-shop concept where Samsung would coordinate the entire repair for you, here they want you to call each shop individually. This can only enrage their customers further!!!....
