Why do people use scratch guard on phones with Gorilla Glass? - Quora
Why your brand-new smartphone will scratch just as easily as your old one - The Verge
Gorilla glass 4" strengthens the strength twice as strong as other glasses reinforced glass, strongly strengthens the impact resistance and abrasion resistance when dropping the smartphone - GIGAZINE
Corning Gorilla Glass gets the Mythbusters treatment in Glass Age videos - Android Authority