Last month at MWC, we were treated to a rather compelling demonstration: a smartphone screen made of material so tough, it was practically un-scratchable. The company providing the demo was GT Advanced Technologies, and the screen was made of a material you’ve probably heard of, but in other contexts: sapphire. In an industry where hardware is fast becoming the differentiator of choice, “sapphire” is the new buzzword for legions of excitement-seeking tech fans. We’re going to take ...