Apple's foldable iPhone Duo hits stores Friday, but preorders sold out almost immediately, with deliveries pushing into January. Yahoo Finance tech editor Dan Howley goes hands-on with the phone, from its 7.6-inch inner display and 5.4-inch outer screen to its cameras and Duo Preview, which lets the person in the photo see the shot before it's taken. He also explains the biggest first-generation drawback: not every app has been optimized for the larger screen yet, and why iOS developers may catch up faster than they did on foldable Android phones. Market Domination, Market Domination Overtime and Asking for a Trend are live weekdays 3-5pm ET with Yahoo Finance Host Josh Lipton. 00:00 The iPhone Duo sells out 00:22 First look at Apple's foldable 00:42 Two screens and three cameras 01:07 Duo Preview 01:41 Apps that aren't optimized yet 02:47 When apps will catch up #Apple #iPhone #iPhoneDuo == AlphaSpace by Yahoo Finance: A Professional-Grade Investment Platform Built for Everyday Investors. 👉 https://finance.yahoo.com/about/promos/gold/alphaspace?ncid=100003571