SEOUL—The U.S. will soon get its first mass-market smartphone that folds not just once, but twice. Samsung Electronics’ Galaxy Z TriFold is expected to hit the shelves in the U.S. as early as the first quarter of 2026, after it goes on sale in South Korea and elsewhere this month. The new phone is the latest salvo in Samsung’s long-running battle with Apple which is expected to introduce its own foldable phone—likely a once-folding model—later next year...

Apple is shaking up its AI ranks, poaching a Microsoft executive and reorganizing after announcing the retirement of its top AI leader, whose tenure was defined by the company’s artificial-intelligence struggles. John Giannandrea, the iPhone maker’s senior vice president in charge of AI strategy, who had reported directly to Chief Executive Tim Cook, is stepping down, the company announced on Monday, and his duties will be split among other senior vice presidents responsible for software engineering, services and operations. Amar Subramanya, who helped oversee Google’s Gemini chatbot before decamping to Microsoft earlier this year, will join Apple as vice president of AI, one rung lower than where Giannandrea was in the organization chart...