Samsung uses a combination of machines and processes to ensure its foldable phones can last for years. In a secluded room deep within Samsung Display's headquarters in South Korea, rows of whirring gray and black machines repeatedly fold, flex and stress test the company's newest mobile displays. During a mid June visit, I was among the first people outside the company to and see how Samsung pushes its foldable screens to their limits before they reach consumers. On Tuesday, Samsung...
