Never used a screen protector and no scratches at all
Back cover is a mess though and the chrome bezel is already chipped and dented in many places
Overall, Not so good build quality.
Native Damage Resistance is a unique feature of Gorilla® Glass 3. Something Corning is able to provide due to a proprietary glass composition that is better able to resist the deep scratches that cause glass to break.
Ion exchange is a chemical strengthening process where large ions are “stuffed” into the glass surface, creating a state of compression. Gorilla Glass is specially designed to maximize this behavior. The glass is placed in a hot bath of molten salt at a temperature of approximately 400°C. Smaller sodium ions leave the glass, and larger potassium ions from the salt bath replace them. These larger ions take up more room and are pressed together when the glass cools, producing a layer of compressive stress on the surface of the glass. Gorilla Glass’s special composition enables the potassium ions to diffuse far into the surface, creating high compressive stress deep into the glass. This layer of compression creates a surface that is more resistant to damage from everyday use.
Yes, there are lots of early threads discussing / complaining about the glass on the S4 already. Now that we've all had our S4s for several months now, what's the verdict? How significant of an improvement over Gorilla Glass 2 is it? Are you confident enough not to use a screen protector? Did you try not using one and scratch your screen? Tell us about it.
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