Not sure someone else has already identified this, but you need to know the difference between a rubber mallet and a hammer (the Samsung fake ad showing their "unbreakable glass" being smashed by a "hammer" that was actually a rubber mallet). Watch closely and you will see what I'm saying is true. Another example: the Moto Z2 is supposed to have unbreakable glass. Yet one customer sent pictures of his Moto Z2 to the Motorola website showing where it had been cracked and got an answer back from Moto saying they'd like to help him but need more information. What "more information"? He supplied photographs  of his cracked phone saying it was one of the most fragile phones on the market. Yet moto doesn't consider that compelling evidence? Or how about my Samsung S8  who the geniuses at Samsung  decided to make into curved glass (WTF??)  so it would break even easier. And once it cracks it promulgates to the rest of the screen without ever dropping it again.  Maybe I should go back to a landline or back to a flip phone when Motorola was honest and built good phones rather than junk like all the other phone manufacturers are putting out now. The cell phone market in general is one of the most sleazy and unreliable, lying and rotten industries in the world. I say that they should all go under the Trump brand since lying seems to be a a key part of Trump Inc's mission statement. Unfortunately, dumb kids only care about how many happy faces and emojis they can get for their keyboards and want bragging rights as to how many megapixels their cameras are capable of. But serious cell phone users who are in the know are getting screwed royally by these assholes. If they can make unbreakable glass for our fat ass president's limo, then maybe the cell phone industry should manufacture all their phones with true unbreakable glass (i.e. bulletproof), at least for people who are working hard to make ends meet, rather than taking up valuable space (and an extra large seat for Trump's executive chair) to accommodate his fat ass.