A project manager just paid $1,999 for the iPhone Duo, Apple's first foldable phone. He didn't preorder. He woke up at 5am on launch day, drove to the Apple Store, and stood in line for two hours with about forty other people. He got one of the few units on the shelf. He carried the box to his car like it was made of glass. He unboxed it in the parking lot. He opened it, felt how thin the titanium body was, saw the huge inner screen light up, and thought: "Wow. That's a lot of phone." Then he drove home, set it on the counter, and used it exactly like his old iPhone. He texted. He scrolled. He checked email. He opened one app at a time, the way he'd done for years. That was his entire Duo experience: a brand new foldable that cost almost two thousand dollars, treated like a regular phone. His coworker, a developer who preordered on day one and had been using the Duo for a few days, glanced at his screen over lunch on Monday. He watched him tap through apps one at a time. And he said something that made the project manager put his sandwich down and pick the phone back up. "You're using the Duo like a normal iPhone. You've never noticed that the dock moves to the right side of both screens, because iOS 27 was rebuilt around this device. You've never opened it and seen two Home Screen pages side by side with Today View on the left. You've never put Zoom and Slack next to each other, which is the exact thing Apple pitched this phone for in the keynote. You've never stood it up in an L-shape on your desk like a tiny laptop. You didn't realize the inner screen has a heavy nano-texture that kills glare and hides the crease. You've never tried Duo Preview, so the people you photograph can watch themselves on the outer screen while you shoot. You don't know there's a FaceTime camera hidden under the inner display. You don't know the Duo has two batteries that behave as one, or that it can charge to 50% in about 20 minutes. You haven't thought about Apple Pencil, which works on both screens. And you never checked that this phone is eSIM-only, which is going to matter the first time you travel." He sat there for a second. Then he asked: "How do you know all this?" The developer shrugged. "I read the spec sheet. Nobody reads the spec sheet." Over the next hour, he showed him 10 things the iPhone Duo can do that most buyers haven't found yet, and why the phone everyone is fighting to get is a very different device from every iPhone that came before it. Apple has sold more than a billion iPhones. This is the first one you open. Here's everything the iPhone Duo can do that most owners haven't found yet 🧵

A woman has paid $13 a month for a phone protection plan for four years. That's $624 out of her checking account, billed quietly on the same day every month, for coverage she's never needed to use. Her credit card also includes cell phone protection, but with a condition buried in the terms: the card only covers the phone if she pays her monthly phone bill with it. She pays that bill straight from her checking account, so the coverage on her card has been switched off the entire time, and she never knew it existed. At dinner one night, she mentioned she'd cracked her screen and was annoyed about the deductible on her plan. Her friend, a former claims adjuster who spent years deciding which claims got paid and which got denied, asked a simple question: "Which card do you use for your phone bill?" She said she didn't. He leaned back and said: "You're paying twice for the same coverage, and you're only getting one." It's one of the most common patterns he saw. People assume a card benefit is automatic, then discover at claim time that it required a specific action months earlier. By then the denial letter is already on its way. He walked her through the benefits that depend on how you pay, and most of them work the same way. Here are the 6 benefits that vanish if you pay the wrong way.🧵