In the South Korean industrial town of Gumi, about a 45-minute helicopter ride southeast of here, Samsung Electronics factory workers, nearly all of them young women, are methodically applying the finishing touches on Galaxy S5s. The launch of Samsung’s newest flagship smartphone on April 11 was a little over a week away, and though most of the Galaxy S5 manufacturing process in the factory is automated, workers on this day were putting the backs of AT&T Galaxy S5 phones on or manually removing the stickers on certain tiny components. Not far away on the Gumi campus, Samsung’s very first mobile phone, the SH-100, is on display. A monstrously large and heavy (1.54 pounds) contraption compared to today’s models, it launched during the 1988 Seoul Olympics. Samsung pays homage to its remarkable mobile past at Gumi, where walls of about 1,800 phones introduced by the Korean electronics giant are encased behind glass and displayed by year.