Gorilla Glass Generations

"Gorilla glass is a brand is specialized toughened glass developed and manufactured by Corning Inc. 
It is light, thin, scratch and cracks resistant. It is mainly used as a cover glass for smartphones, tablets, smart watches, television screens, etc."

"During its manufacture, the glass is toughened by ion exchange. The material is immersed in a molten alkaline potassium salt at a temperature of approximately 400 °C (750 °F), wherein smaller sodium ions in the glass are replaced by larger potassium ions from the salt bath. The larger ions occupy more volume and thereby create a surface layer of high residual compressive stress at the surface, giving the glass surface increased strength, ability to contain flaws, and overall crack-resistance, making it resistant to damage from everyday use.

"Gorilla glass versions :

Gorilla glass 1 - 
• Introduced in 2007 with iPhone 3GS.
• It had high scratch resistance than plastic screen covers of that time.
• 1.5 mm to 2 mm in thickness.

Gorilla glass 2 -
• Introduced in 2012.
• 20 % thinner than gen 1.
• 20 % increase in damage resistance than gen 1.

Gorilla glass 3 -
• Introduced in 2013.
• Introduced native damage resistance.
• 3 times more damage resistance.
• 40 % improved scratch resistance.
• Less brittle and tougher than gen 2.
• More flexible
• Has silver ion doping which is anti-bacterial.

Gorilla glass 4 -
• Introduced in 2014.
• 80 % survival rate on dropping from a 1-meter height on a hard surface.
• More flexible than Gorilla glass 3.
• 125 % increase in compression layer depth.
• Higher resistance to cracking and crack propagation.

Gorilla glass 5 -

• Introduced in 2016.
• More damage resistance.
• 80 % survival rate on dropping from a 1.6-meter height on a rough surface.
• Improved drop performance
• High retained strength after use
• High resistance to scratch and sharp contact damage
• Superior surface quality

Gorilla glass 6 -

• Introduced in 2018.
• 80 % survival rate on dropping from a 4-meter height on a rough surface.
• Survival rate is 1.5X better than Gorilla glass 5
• Survived 15 consecutive drops from 1 meter onto rough surface.
• Increased drop height performance
• 2X time better than Gorilla glass 5
• High resistance to scratch and sharp contact damage
• Better wireless charging