iPhone Duo: Apple's First Foldable iPhone, Full Specs, Singapore Price and Release Date

Quick Answer

Apple's first foldable iPhone is officially called the iPhone Duo, not the iPhone Fold or iPhone Ultra that rumours had settled on. It has a 7.6-inch inner display, a 5.4 inch outer display, the A20 Pro chip, and no Face ID (Touch ID lives in the side button instead). In Singapore, it starts at S$3,099 for 256GB. Pre-orders open at 8pm SGT on 16 October, with the phone in stores from 23 October.

Key Takeaways

• The name is confirmed: iPhone Duo. "iPhone Fold" and "iPhone Ultra" were both rumour-era placeholders.

• Singapore pricing runs from S$3,099 (256GB) to S$4,899 (2TB), GST inclusive.

• Pre-orders open 16 October at 8 pm SGT, with availability from 23 October, five weeks after the iPhone 18 Pro line.

• iPhone Duo is eSIM-only worldwide, including Singapore, with no physical SIM tray in any market.

• Apple Pencil support is coming but not at launch. It arrives later this year via a software update.

• Early hands-on reactions call the crease the least noticeable on any foldable so far, though not fully invisible.

What Is the iPhone Duo?

Apple has watched the foldable category from the sidelines for years while Samsung, Huawei and Google shipped generation after generation. That changed at the Apple "Surprise and Shine" event on 9 September 2026, held at the Steve Jobs Theatre in Cupertino.

The device is the iPhone Duo, Apple's first foldable iPhone and, by the company's own description, the thinnest iPhone it has ever made when unfolded. Every earlier name you may have seen circulating, iPhone Fold, iPhone Ultra, iPhone Ultra Fold, was rumour-stage guessing. Apple settled on Duo.

It is a book-style device. Closed, it behaves like a normal phone with a 5.4-inch outer screen. Opened, it reveals a 7.6-inch inner display, close to iPad mini territory, built for multitasking, video and split-screen work.

iPhone Duo Price in Singapore

Confirmed Singapore pricing, listed on Apple's storefront and inclusive of GST:

For comparison, the same launch put the iPhone 18 Pro at S$1,899 and the iPhone 18 Pro Max at S$2,099 for their base tiers, according to MissLobang. The Duo sits roughly a thousand dollars above the Pro Max at every matching storage tier, which tells you where Apple has decided this device belongs in the lineup.

In the US, the equivalent starting price is $1,999 for 256GB, rising to $3,199 for 2TB, according to MacRumors. The Singapore premium reflects GST and regional pricing, not a different device.

Apple is also offering 0% interest installments over 24 months on the Duo in Singapore, working out to roughly S$129 a month for the 256GB model, per TheSmartLocal. Trading in an older iPhone brings the effective monthly cost down further.

iPhone Duo Release Date and Pre-Orders

Pre-orders for iPhone Duo open at 8 pm SGT on Friday, 16 October 2026. The phone became available in stores and for delivery from Friday, 23 October 2026, according to Apple's Singapore storefront

That is five weeks after the iPhone 18 Pro and Pro Max, which opened for pre-order on 12 September and went on sale 18 September. Supply chain reporting had flagged production challenges behind the Duo's later date, and Apple's own scheduling confirms the gap was real rather than rumour.

Singapore is part of Apple's first wave of over 70 countries and regions receiving the Duo on 23 October, alongside Australia, Canada, Japan, Malaysia, the UK and the US, according to 9to5Mac. A second wave of 28 more countries follows on 30 October.

iPhone Duo Specs: Display, Chip and Cameras

Display. The inner screen is a 7.6-inch Super Retina XDR panel with a nano-texture finish designed to cut glare, described by Apple as 50% larger than the iPhone 18 Pro Max display. The outer display measures 5.4 inches and covers more than 90% of the screen area on the iPhone 18 Pro. Both panels share ProMotion, Always-On, the same aspect ratio, and peak outdoor brightness of 3,000 nits.

Chip. iPhone Duo runs on the A20 Pro, the same chip in the iPhone 18 Pro line, paired with Apple's in-house C2 modem for cellular connectivity. Apple says the 6-core CPU runs up to 20% faster than the A19 Pro, with a 7-core GPU roughly 40% faster and a dual 16-core Neural Engine for on-device AI tasks, per MacObserver.

Cameras. The rear system is a 48MP Dual Fusion setup: a 48MP Main lens (26mm, f/1.6) and a 48MP Ultra Wide (13mm, f/2.2). There is no telephoto lens, so zoom tops out around 4x optical and 10x digital. Up front, a 12MP Centre Stage camera handles both landscape and portrait framing, and there's a second under-display camera built into the inner screen for FaceTime while unfolded.

Four camera features are exclusive to the outer display: Smart Take, which fires when everyone in frame is posed, Duo Preview for showing subjects a live view, Kid Cue for entertaining children during a shot, and Duo FaceTime, which lets someone nearby join a call from the outer screen.

Build and colours. Grade 5 titanium with a mirrored polish, Ceramic Shield on both the front and back panels when closed. Two colours at launch: Star White and Night Sky. Weight sits around 254 grams, roughly the weight of a full soda can, and closed dimensions are close to a passport.

Battery Life and Charging

Apple's own figures: 31 hours of video playback using the inner display alone, 44 hours using only the outer display, and 24 hours for realistic mixed use across both. Two separate battery cells work together as a single unit.

Charging reaches 50% in around 20 minutes, and a five-minute top-up is enough for roughly five hours of outer-display video, useful for anyone who forgets to charge overnight.

The Crease, Hinge and Durability Question

This is the detail every foldable buyer actually cares about, and it's also the one Apple has been least specific about. There's no published crease-depth number and no fold-cycle durability rating, which is normal at launch but worth watching for as independent lab tests arrive over the coming weeks.

Apple's approach leans on the screen surface rather than the mechanism. An ultra-fine matte finish is designed to keep the display looking flat across the fold, and a multi-layer adhesive sandwich lets internal layers shift slightly against each other as the phone opens and closes, similar to pages sliding past each other in a book, according to TheSmartLocal.

Early hands-on impressions are mixed. Some reviewers say the crease is close to invisible under normal use; others say it's still catchable on video or at certain angles. The fair summary right now is that this is the least noticeable crease on a foldable to date, not a fully solved problem.

Software: iOS 27, Multitasking and Apple Pencil

iPhone Duo ships with iOS 27.1, running a version of iOS customized for the dual-screen layout, including the Home Screen dock moved to the right side on both displays. The larger inner screen supports running two apps side by side, a first for iPhone software.

Apple Pencil support (USB-C) is confirmed but not available at launch. It's coming later this year through a software update, which matters if note-taking or sketching is the reason you're considering this phone over a regular iPhone 18 Pro.

iPhone Duo vs iPhone 18 Pro Max vs Other Foldables

The Duo's closest fight in Singapore is really against your own iPhone 18 Pro Max, not Samsung. If you already live in Apple's ecosystem, the decision usually comes down to whether the larger inner screen justifies roughly a thousand dollars more than the Pro Max at the same storage tier, and whether losing Face ID for Touch ID is a real trade-off for your daily use.

Against Samsung and Huawei, Apple arrives with fewer generations of hinge refinement but a tighter hardware and software pairing, four exclusive outer-display camera features, and the ecosystem lock-in that makes most buyers stay in one camp anyway.

What This Means for Buyers in Singapore

The eSIM-only design is the single most practical detail in this entire launch. There is no physical SIM tray on iPhone Duo anywhere in the world, Singapore included, so anyone still on a physical SIM will need to switch before pre-order day. Circles.Life's eSIM in Singapore page covers the switch, and the eSIM compatible phones list is worth checking if you're weighing a Duo against a phone you already own.

A 7.6-inch display built for split-screen browsing, gaming and video is going to pull through more data than a standard phone screen, not less. If your current mobile data plan was sized around a 6.1-inch phone, it's worth reviewing before the larger screen becomes a daily habit.

The bigger canvas only pays off if the network behind it keeps up, which is where 5G mobile plans come in for anyone planning to stream or video call heavily on the inner display.

For a sense of what else launched alongside the Duo, Apple's iPhone 18 Pro & Pro Max remains a far more affordable route into this generation's A20 Pro chip without paying a foldable premium. 

Conclusion

The rumour mill spent over a year arguing about a name, a price range and a launch month, and got remarkably close on most of it. What nobody had settled on was "Duo", and that single naming choice tells you something about how Apple wants this phone understood: not as an ultra-premium flagship variant, but as its own category, built around two screens working as one device rather than one giant fold.

At S$3,099 to start, this isn't a phone most people upgrade into casually. It's a first-generation product with real trade-offs, no Face ID, no Apple Pencil at launch, and an unproven crease over years of daily folding. What it does have is Apple's chip, Apple's software polish, and a battery figure that holds up against dedicated tablets.

If a bigger screen and true multitasking matter more to you than matching every current iPhone feature, the Duo is worth the 16 October pre-order date. If you just want this generation's chip and camera without the foldable premium, the iPhone Pro Max remains the far more practical S$2,099 answer, and either way, an eSIM-ready plan sorted ahead of launch day will save you a scramble at the Apple Store.