I always use a case. I like a leather or good imitation leather folder best. I have one on the Pixel xl that has been excellent (Belk, is the brand name, got it off Amazon pretty cheap). My grandson, age 2, grabbed the phone once, and mad that I said no, dropped it deliberately on the wood floor He isn't very tall so not a huge drop. It apparently landed just right because there isn't a scratch on it, and it worked the same after as it did before. Whew. SP are a hassle with the Samsung curves but that is one reason I like the folder, or folio style, it does cover the screen.