4 ms·

I wonder why there are still no widely available sapphire crystal screens.

• Kirby64 3y ago
  Two reasons: large, phone sized sheets of sapphire are difficult to manufacture and be optically clear. Also, sapphire is more brittle than glass... so despite scratching less easily, it's much much more likely to shatter if you drop a phone. Glass, as much as it has deficiency, is a compromise inbetween. And it's way cheaper, to boot.