As I said. Not a clue how it happened, and TBH, the first time this has happened in all the Samsung phones I've owned. Just bad luck, I think. My comments are pertaining to, regardless of how many generations of glass is evolving, we're no further forward to producing scratch proof glass. I understand the technicalities between weight, thinness, hardness, ability to shatter as opposed to withstanding drops, etc. I've certainly not seen many improvements since the S7..just MHO.