https://www.cnet.com/news/some-samsung-galaxy-fold-screens-are-reportedly-breaking-already/

"The phone comes with this protective layer/film. Samsung says you are not supposed to remove it," he tweeted.  "I removed it, not knowing you're not supposed to (consumers won't know either). It appeared removable in the left corner, so I took it off. I believe this contributed to the problem."

Samsung says its phone "is manufactured with a special protective layer," to cover the plastic Infinity Flex display. "It is not a screen protector – do not attempt to remove it," Samsung says.