TheiPhone 6was supposed to have a sapphire display. More than a year ago, Apple turned to GT Advanced Technologies, the now-bankrupt supplier, to solve its longstanding problems with scratched and cracked displays. But as soon as the two companies signed an agreement, their relationship became riddled with complications. In the ensuing year,as chronicled in detail by theWall Street Journal, everything shifted.
I’m linking to The Verge’s summary because of the paywall.