I didn't use a case with my iPhone XS Max. Made it two months before dropping it when taking it out of my pocket. I was sitting and it only fell maybe a foot or two, but onto concrete. Front screen was fine but it shattered the back glass. So stupid that replacing the back glass costs so much. Didn't pay to fix it, though. Sold it at a slight discount to someone who said it didn't matter that the back glass was cracked because it would be in a case anyway and they would never see it. I've always used some sort of case since then. Without one you are much more careful and aware, but there's always a chance of an accident happening no matter how careful I am.