Set back from a dusty highway in South India, three newly completed factory buildings rise up behind a black spiked iron fence. In their shadow, several yellow construction vehicles sit beside mounds of upturned soil and the skeleton of a half-built warehouse. On a May afternoon this year, a group of women in blue and pink uniforms hurried from one building to another over the din of traffic and construction. This factory complex in Sriperumbudur, an industrial town in Tamil Nadu state, is one of Apple’s most important iPhone assembly hubs outside of China.