Research firm TrendForce said on 28 October 2026 that Apple’s first foldable iPhone, the iPhone Duo, is expected to ship approximately 5 million units, accounting for about 24.8% of the foldable smartphone market in 2026. TrendForce estimates that global foldable smartphone shipments will edge up just 0.5% in 2026.
In plain words, if TrendForce’s estimates hold, about one foldable phone in four shipped this year would be an iPhone Duo, in a market that is barely growing. By our arithmetic from TrendForce’s rounded figures, 5 million units at 24.8% implies a 2026 foldable market of about 20.2 million units, which leaves about 15.2 million for every other brand combined. TrendForce does not give the total.
A vertical news Short narrated from the published headlines and opening lines of this piece and five related FourWeekMBA pieces on Apple hardware.
Business Pill · Vertical Integration
An evergreen Business Engineer explainer on vertical integration and stacked margins: what changes when one company owns more layers of a product. It explains the general idea only and does not discuss Apple or the iPhone Duo.
The key insight: As we read it, TrendForce’s numbers describe a share shift inside a flat market: about 24.8% of 2026 foldable shipments for the iPhone Duo, in a market TrendForce expects to grow just 0.5%.
TrendForce 2026 estimates, to scale (each icon = 0.5 million units): iPhone Duo approximately 5 million units, about 24.8% of foldable shipments; about 15.2 million for all other foldables is our arithmetic (5 / 0.248 – 5); TrendForce expects the foldable market to grow 0.5% in 2026. Source: TrendForce press release, 28 Oct 2026.
Units. TrendForce says Apple’s first foldable iPhone is expected to ship approximately 5 million units in 2026.
Share. TrendForce puts that at about 24.8% of the foldable smartphone market in 2026.
The market. TrendForce estimates that global foldable smartphone shipments will edge up just 0.5% in 2026, and writes that with the overall market remaining largely flat, Apple’s entry is poised to accelerate shifts in market share among competing brands.
Demand. Less than a week after Apple opened preorders, its official website was already showing delivery dates extending into January 2027 for some orders, according to TrendForce.
TrendForce 2026 estimates for foldable smartphone shipments: iPhone Duo approximately 5 million units, about 24.8% of the market. The implied total of about 20.2 million units (5 / 0.248) and about 15.2 million for all other brands are our arithmetic from TrendForce’s rounded figures. Source: TrendForce press release, 28 Oct 2026.
Patently Apple relayed the TrendForce report in an X article titled “Apple’s iPhone Duo Could Capture Nearly 25% of Foldable Market Despite Early Reliability Issues”.
Early Reliability Questions
TrendForce says initial user feedback has been polarized: users have praised the split-screen functionality and viewing experience when the device is unfolded, while black borders in some apps, button placement and fingerprint authentication have added to the learning curve.
It adds that reports of damaged displays and high repair estimates have shifted attention toward product reliability and long-term ownership costs. One hypothesis arising from recent teardown analyses of damaged Duo displays, TrendForce writes, is that insufficient retraction of the central support during folding may cause unintended contact and localized stress concentrations.
TrendForce also says Apple has provided replacements for a small number of devices exhibiting inner-display abnormalities. It describes the hypothesis as one arising from teardowns; it does not say the cause is established.
Software and Battery
According to TrendForce, some apps still display black borders or fail to make full use of the available screen area, which it says indicates that software adaptation has yet to fully capitalize on the hardware’s capabilities. It also notes that the larger display places greater demands on power management, since the power required for OLED light emission depends on brightness, emitting area and displayed content.
TrendForce writes that Apple’s greatest advantage lies in its ability to integrate chips, operating systems and its developer ecosystem.
Connecting the Coverage
Our iPhone Duo inner-screen piece reported that Apple said in a statement to 9to5Mac on 26 October 2026 that it is “aware of an issue impacting the inner display on a small number of iPhone Duo units,” three days after the $1,999 phone went on sale. What’s new: TrendForce now puts a number on demand and share, and records a teardown hypothesis about the hinge’s central support.
Our memory-cost piece covered The Korea Herald’s 26 October report that Samsung Electronics and Apple are scaling back orders for smartphone components as memory prices squeeze margins. Both reports concern Apple’s handset supply chain; TrendForce does not link its 0.5% foldable estimate to memory costs.
Our MacBook Pro pricing piece covered Bloomberg’s 27 October report that Apple has discussed charging $2,899 for a 14-inch MacBook Pro with a touch screen. The piece’s 28 October update adds Reuters’ report that Apple is expected to unveil its first touchscreen MacBooks at an event in Los Angeles, after a folding iPhone.
The Structural Read
As we read it, the gap TrendForce describes runs between the hardware and the apps: it says some apps still display black borders or fail to make full use of the available screen area.
TrendForce says reports of damaged displays and high repair estimates have shifted attention toward product reliability and long-term ownership costs.
By our arithmetic from TrendForce’s rounded figures, the iPhone Duo’s approximately 5 million units imply about 15.2 million foldables for all other brands combined in 2026.
TrendForce, 28 Oct 2026
“Apple’s greatest advantage lies in its ability to integrate chips, operating systems, and its developer ecosystem.”
Three Implications
FOR APPLE TrendForce says Apple’s greatest advantage lies in integrating chips, operating systems and its developer ecosystem, while some apps have yet to use the full screen.
FOR RIVAL FOLDABLE MAKERS TrendForce writes that, with the overall market remaining largely flat, Apple’s entry is poised to accelerate shifts in market share among competing brands.
FOR BUYERS TrendForce says reports of damaged displays and high repair estimates have shifted attention toward reliability and long-term ownership costs.
The framework starts from two curves: “The first is what your underlying technology can do. The second is what your users can actually do with it.”
TrendForce’s account of the iPhone Duo shows the same gap at device level: a larger folding screen, and apps that, it says, still leave black borders. The framework was published in June 2026, is written about AI models and products, and does not discuss the iPhone Duo.
What Is Not Established
TrendForce’s figures are estimates, not shipment data, and Apple has not published iPhone Duo shipments. TrendForce does not give the total size of the foldable market or other brands’ shares; the 20.2 million and 15.2 million figures are our arithmetic from its rounded numbers. The cause of the reported display damage is described by TrendForce as a hypothesis from teardowns. We did not contact Apple or TrendForce. Nothing here is investment advice.
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TrendForce estimates the iPhone Duo at approximately 5 million units and about 24.8% of 2026 foldable shipments, in a market it expects to edge up just 0.5%. The same report records polarized early feedback, reports of damaged displays and a teardown hypothesis about the hinge.
A note on sourcing. Estimates, paraphrased findings and the teardown hypothesis come from TrendForce’s 28 October 2026 press release; Apple’s quoted statement was given to 9to5Mac on 26 October, as our earlier piece reported; Patently Apple relayed the report on X. The implied market total and other brands’ units are our arithmetic from TrendForce’s rounded figures. We did not contact Apple or TrendForce.
Gennaro Cuofano is a CRO and tech executive who has worked in AI since late 2015, starting with bringing NLP, natural-language generation, voice and chatbot products to the marketing industry. His background is in law and finance: he holds a Master's degree in Law and an International MBA with an emphasis on corporate finance (LUISS Business School and the University of San Diego, 2012), and worked as a financial analyst at a real-estate investment firm in San Diego and as an assistant controller. His work focuses on business model strategy, business engineering and, more broadly, structural analysis: how companies make money, read from their own filings. He created FourWeekMBA and leads research there and at The Business Engineer, his newsletter on AI and business strategy, with over 95,000 subscribers and more than 1,000 published analyses. His writing has also appeared on Entrepreneur (for example, How to Digitize a Family Business in Europe) and HackerNoon. Find him on LinkedIn and Substack. See how we source.
