A video shows about Apple’s upcoming 4.7 inch’s iPhone 6 that demonstrates how even a knife can’t scratch its display.
Marques Brownlee a YouTube user said “This isn’t a mockup, “This is an actual, straight-off-the-assembly-line iPhone 6 part from Apple.
According to Mashable.com “Unlike Gorilla Glass, the protecting layer on the iPhone 5S, sapphire crystal is paper thin (the actual thickness of paper) and can endure intense pressure. Apple already uses sapphire crystal for its iPhone 5S camera, and the material is often found in high-end watches as well as some other camera lenses.”
Brownlee uses his shoes to bend and break the surface, but he can’t.