Apple's foldable iPhone Duo, a personal AI agent with a screen 50% larger than the Pro Max, should drive a big upgrade cycle next year. The precedent is the iPhone 6, whose move from a 4-inch to a 5.5-inch screen lifted revenue growth from 7% in FY14 to 28% in FY15. Apple shares gained 4% on the launch. Broader caution remains until the November 3 midterms, with the Fed hiking, weak September seasonality, elevated oil and multi-decade-high bond yields. x.comÂ