I've followed the foldable smartphone space for seven years now, but I’ve still never wanted to buy one. But the iPhone Duo is making me doubt my convictions, and not just because I’m an iPhone user. Until now, foldable smartphones felt like a work in progress to me, requiring a sacrifice or two (or three) with either the hardware or the software.But with the launch of the iPhone Duo, it feels like this everything is finally coming together. Apple's hardware and the software appear to be working hand in hand to provide a seamless, and even fun, foldable experience. It still feels like choosing the Duo instead carries its own share of compromises—missing Face ID, no telephoto lens, and the lack of an Action button)—but what the new device brings to the table might make up for all of that. The screen opening animation is peak Apple design Credit: Apple It’s a trick, but it’s surprising no one thought of this before. When you open the iPhone Duo, the cover screen performs a blurred animation that seamlessly continues to the inner screen. What’s on the cover screen appears on the right side of the inner screen. The interface also adapts to the hinge and the degree of folding. Make it a tent, and it shows the Stand By widgets. When watching media, you can prop it up like a laptop, and the interface splits in two as well, with the top half showing the media, and controls on the bottom half (assuming the app has been optimized to do so, anyway). If you’re playing a game or watching a movie on the inner screen, closing the Duo will switch the content to the cover screen, with the animation, and without skipping a beat. This is the kind of seamless device/software integration that's tough for Android devices to compete with.A matte inner screen that appears to be creaseless (almost) Credit: Apple Apple is late to the foldable party, but at least it has caught up in the screen and hinge tech. Of course, we won’t know exactly how creaseless it is until we can all get our hands on the iPhone Duo, but based on the coverage so far, it is at least fairly creaseless. In day-to-day use, you might not even notice it.More interesting is the inner display tech: Apple is bringing a version of the nano-texture display from the MacBook Pro line to this device. The matte display fights reflections, but it also hides the crease—something that’s harder to do with the glossy panels sported by Android foldables.The iOS 27 adapts like Android doesn’t Credit: Apple As noted, the real hardware-software advantage shows up in how iOS works. Because of the shorter display, Apple has chosen to dedicate the right-hand side edge to the Dock and toolbar controls, an interesting choice in terms of reachability and design.The usable space isn’t compromised, either with the cover screen or the inner display. Adapting and moving the toolbar, and bringing third-party apps along for the ride, is no easy feat. It’s also something that would be extremely difficult to pull off on the Android side: It would require a design directive from Google, and manufacturers would have to find their own ways to implement it.App layouts should make the inner display more useful Credit: Apple It will be interesting to see how third-party developers adapt to the new screen and layout options. Apple already showcased how media apps like Netflix are taking advantage of the split-screen interface design. Zoom’s example, where the screen sharing is on one side and the meeting participants are on the other, is quite smart, too.How you end up using the inner screen on a foldable is all down to how developers take advantage of it. Sure, you can put two apps side by side, but how often are people really going to do that? But the fact that you have an iPad mini-sized canvas, along with upcoming support for the Apple Pencil, sets the stage for creative uses of the expanding display. Conversely, Samsungdropped support for its stylus from the Fold series last year.A disappearing selfie camera and new camera tricks Credit: Apple Under-display selfie cameras are not new—Samsung tried it in Fold 3, and gave up in the Fold 7. The under-display camera just wasn’t as good. This is the first time that Apple is trying it, and we will have to test it out before we can make a judgment on how well it performs.But that's not the only camera-related feature in the iPhone Duo. While it's missing a telephoto lens, the way Apple is using the second screen in the camera and FaceTime is very interesting. When you're photographing someone with the Duo unfolded, the cover screen becomes a live preview, so the subjects can see themselves, and guide you as well. To make it easier to capture moments with kids, the outer camera can show fun Snoopy graphics. Even FaceTime has a Duo mode where a participant can be shown on the cover screen. A foldable that’s still rough and toughMost foldable smartphones lose out when it comes to dust and water resistance. The design itself means you have to be careful with dust, especially around the hinges. The Samsung Fold 8, for example, has an IP48 rating. The iPhone Duo gets the full IP68 sealing treatment. An IP68 rating means that the iPhone Duo is fully dust-protected, and it can survive under shallow 1.5 meter deep water for 30 minutes. The Samsung Galaxy Fold 8 lacks a dust-sealing rating, though it does offer stronger water resistance.Is the iPhone Duo worth the downsides?All that new tech does come at a cost. The first is literal: the $1,999 starting price, or more than buying an iPhone and an iPad mini combined. The foldable design ushers in a new era of iPhone innovation, but it’s also leaving behind features that iPhone users have come to love and expect. There’s no Face ID, no Action button, no real optical zoom, and no physical SIM card slot, all lacking in a device that’s quite heavy (254 g) compared to the iPhone 18 Pro (211 grams). Ultimately, the market (and buyers' wallets) will decide if these tradeoffs are worth it, but if you ask me, the Duo makes the most compelling case for a foldable yet. iPhone Duo pre-orders open October 16, and the device won’t ship until October 23.