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iPhone 6 Sapphire: Explained!

2014-07-18
hey what is up guys I'm cabby HD here and apparently a lot of people care about this iPhone 6 sapphire crystal display so in that video that I did about it I went through a couple tests to measure the durability of the panel I bent it a lot I put it under my foot and pulled on it really hard I dragged my keys and my knife across it and then eventually stabbed it pretty hard but I was never able to get it to scratch but here's the thing about scratch tests with knives and keys knives and keys aren't that hard they're I mean they're pretty sharp obviously on the end if I drag it across my own skin it'll hurt a lot but when you compare it to sapphire glass or really any glass for that matter Gorilla Glass included metal is pretty soft so let me introduce you to the Mohs scale it's a scale from 1 to 10 rating mineral hardness so basically how it works is at any rating a mineral can scratch anything below it but cannot scratch anything above it so take quartz for example on that scale it's rated at a 7 that means anything above a 7 can be used to cut quartz but anything below it won't even make a mark so on the Mohs scale my steel knife blade that I use in that video is a 5.5 Gorilla Glass is already at a 6.8 and pure sapphire which is a form of aluminum oxide is the second hardest naturally occurring material on earth it's at a nine so by those numbers a steel knife blade no matter how hard I try will never scratch my phone's display Gorilla Glass or sapphires let's say goodbye to knife blade scratch tests this new test is pretty legit welcome to the era of sandpaper screen tests because every smartphone on the market right now should survive the softer metals familiar knife or keys so I have two types of sandpaper here the first one is garnet it's a bit softer it's at about a 7 on the Mohs scale which means it's harder than Gorilla Glass but softer than pure sapphire and the second is Emery it's at about an eighth a little higher than eighth on the Mohs scale so it'll really be able to show we're working with here now keep in mind we already know exactly what we're working with on the front of the iPhone 5s its Gorilla Glass 3 on the front like in some other phones but the home button that small little part is already sapphire Apple shows that part because it's small not too expensive and can resist scratches better than gorilla glass to keep that touch ID fingerprint stuff working even when the phone gets beat up so the new iPhone 6 has this entire display made of a new material that we already know can bend really well but sandpaper will show its true hardness so the first piece of garnet sandpaper taking it to the Gorilla Glass of the iPhone 5s it immediately scratched a lot and that's expected it's a harder material so this is exactly what should happen taking the same material to the iPhone 6 screen with the same force it actually does scratch as well but not quite as much it does resist those scratches a little better and I also noticed it made a very different sound when scratching so we're learning here that already this new display is definitely not pure sapphire because it's already getting scratched by a softer garnet so what's interesting is check out the iPhone 5s is home-button it's still flawless not a single scratch the garnet did not scratch the theoretically much closer to pure sapphire home button which actually means the home button was damaging the garnet okay so moving on to the emery much harder sandpaper taking it to the iPhone 5s no real surprise here it basically destroys it put some really deep scratches all over the panel pretty much instantaneously so that Gorilla Glass is much softer didn't stand a chance taking it to the iPhone 6 display now we of course still get scratching it again made a different sound and it is much more limited so this material is definitely harder it holds up better to the much more tough emery sandpaper but it's definitely not indestructible or invincible and for good measure I actually went back over the pure sapphire of the iPhone 5s is home button again and it held up still really really well so I'm impressed with the pure sapphire of course it shouldn't scratch because it's harder than the sand papers we use so what we learn from all this testing two things number one the iPhone 6 display is harder than Gorilla Glass and we'll put up to scratching and bending a lot better than the iPhone 5s is display did and to the iPhone 6 display is not pure sapphire like the touch ID home button is and that actually makes sense using a matte panel of pure sapphire for the front of a phone would be a little bit stupid it would be first of all much more expensive and it also wouldn't be able to bend like it did believe it or not you actually kind of need your phone to be able to flex a little bit so pure sapphire is still best in smaller parts like the touch ID cover over the home button and the glass over the back of the iPhone 5s camera a little bit of research shows that apples actually already patented a fusion process where the sapphire structure may also be mechanically modified to help reduce the likelihood of chipping or fracturing and the resulting sapphire laminate may achieve both superior hardness and strength due to the use of multiple planes basically it's a composite involving sapphire to make it overall a lot stronger than the Gorilla Glass of the previous iPhones or many other phones out there and it works as we saw and I'll have the link to the exact Patton replica it out but basically as long as you're not carrying some high-quality sandpaper in your pocket you should be good without a screen protector on the next iPhone which is really comforting for a lot of people to hear and I'm sure Apple will talk a lot I would expect a lot of talk from Apple at their next keynote about how strong and indestructible this material is well not really indestructible you you you you
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