guitlybreak is right, its science. There is a reason they use keys in the demonstrations. Keys will have an extremely hard time scratching coated glass. Its not because its alien tech gorilla glass from the year 3000, try it on a window in your house. Not to mention keys arent sharp and usually the teeth on keys are rounded somewhat. This should help shed a little more light on everything
Mohs scale of mineral hardness - Wikipedia, the free encyclopedia
if you notice number 7, quartz, silicon dioxide. Thats why sand is able to scratch the droids screen. Glass is made with sand, but the sands small size makes it considerably stronger (which is why people sand blast). Diamonds will sure as hell scratch your screen, because theyre the hardest minerals on the planet and will scratch virtually any surface. I don't even notice my screen protector, but I like knowing its there. But if you want to carry your droid naked, thats fine too. Just don't be fooled into thinking that your screen isn't capable of being scratched. It isnt large objects that are going to scratch your screen necessarily, its the small things that will scratch it. Those key videos are just clever marketing, nothing more.
Mohs scale of mineral hardness - Wikipedia, the free encyclopedia
if you notice number 7, quartz, silicon dioxide. Thats why sand is able to scratch the droids screen. Glass is made with sand, but the sands small size makes it considerably stronger (which is why people sand blast). Diamonds will sure as hell scratch your screen, because theyre the hardest minerals on the planet and will scratch virtually any surface. I don't even notice my screen protector, but I like knowing its there. But if you want to carry your droid naked, thats fine too. Just don't be fooled into thinking that your screen isn't capable of being scratched. It isnt large objects that are going to scratch your screen necessarily, its the small things that will scratch it. Those key videos are just clever marketing, nothing more.
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