Apple's $2,000 foldable iPhone Duo hits stores amid tight supply

Apple's first folding phone, the iPhone Duo, went on sale worldwide on Friday at about $2,000. Demand was strong but sales were rationed, with pre-orders capped at two per customer and delivery estimates slipping to late January. In India, China, France, Hong Kong and Japan, it was available only to those who ordered online. The launch is an early test for new CEO John Ternus.