Apple Unveils iPhone 18 Handsets, Touts AI Capabilities

Consumer electronics giant Apple (AAPL) on Wednesday introduced a refreshed lineup of premium smartphones, the iPhone 18 Pro and Pro Max. Apple also debuted its first folding-screen handset called the iPhone Duo. But Apple stock slid. The company held its fall product launch event, dubbed "Surprise and shine," at its Cupertino, Calif., headquarters. The event was the first to be…