How many iPhone Duos will Apple sell in 2026?

Apple has never published a sales target for any iPhone, and it has not broken that habit for its first foldable. Into that silence, four firms have now put numbers on how many iPhone Duos will ship in 2026 — and they do not agree with each other within a factor of seven.

That spread is the story. For a product that goes on pre-order on 16 October and reaches customers a week later, a range this wide says something specific: nobody outside Apple’s supply chain knows how many of these Apple can actually build.

Contents

1. The four numbers
2. TrendForce: second place in year one
3. The market Apple is entering is not growing
4. Why the estimates diverge
5. Everyone agrees on the price
6. What none of this tells you
7. What to watch

The four numbers

Source	2026 shipments	Framing
TrendForce	~5 million	24.8% of the foldable market
Jeff Pu, GF Securities	7 million	Through year-end
Goldman Sachs	14 million	Base case
Goldman Sachs	35 million	Optimistic case

Goldman’s own base and bull cases differ by 21 million units. That is not a rounding disagreement — it is the difference between a constrained niche launch and the fastest-selling foldable ever made.

TrendForce: second place in year one

The most detailed modelling comes from TrendForce, and its headline finding is striking even at the conservative end of the range. On roughly 5 million units, Duo would take 24.8 percent of the foldable market in its first year — second only to Samsung.

Brand	2026 units	Share
Samsung	~7.1 million	35.1%
Apple	~5 million	24.8%
Huawei	~5 million	24.8%

Samsung has been building book-style foldables since 2019. Apple arrives in October and takes a quarter of the category before the year is out.

The market Apple is entering is not growing

Here is the part that gets less attention. TrendForce puts the entire foldable market at roughly 20.2 million units in 2026 — growth of 0.5 percent year over year. Essentially flat.

And within that flat market, non-Apple Android foldables are forecast to decline more than 20 percent, to around 15.2 million units.

So Apple is not expanding the category in year one. It is taking a quarter of a stagnant market, and the units are coming almost entirely out of Android’s side of the ledger. If TrendForce is right, the immediate effect of Duo is not more foldables sold — it is the same number of foldables sold, with Apple holding a quarter of them.

Why the estimates diverge

The four forecasts are not modelling different demand. They are modelling different supply.

The consistent line across every analyst note is that folding displays and hinges have historically capped first-year volumes across the whole industry, and that Apple was still ramping output in late August. Evercore’s version is the bluntest: Apple will sell every iPhone Duo it can build in the first six months. On that reading, demand is not the variable at all — the only question is manufacturing yield.

Goldman Sachs analysts Allen Chang and Verena Jeng take the opposite view of the hardware, and it is worth understanding why, because it is the single disagreement that produces most of the spread. They argue the Duo’s slim, light design is easier to manufacture than existing foldables, which would loosen the constraint everyone else treats as binding — and that the same design widens the addressable audience beyond the usual early adopters.

One camp sees a hard ceiling on output. The other sees a device engineered to raise it. That is a 21-million-unit disagreement about a production line, not about consumer appetite.

Everyone agrees on the price

The one thing the notes converge on is that $1,999 came in low.

Jeff Pu had modelled a $2,000–2,500 range and called the actual figure the lower end of it. Goldman described the price as “affordable” and “competitively priced”, noting Apple hit it “despite the constraints of high memory costs and powerful specifications” — and that it undercuts Samsung’s Galaxy Z Fold 8 Ultra at $2,099.99.

That matches what the pricing section of our review concluded on announcement day: in a category where $1,800 to $2,000 is the going rate, $1,999 landed lower than the run-up suggested it would.

Pu also framed Duo as the demand driver for the whole iPhone 18 cycle, against a softer backdrop — 76 million iPhones in Q4 2026 on his numbers, down 7 percent year over year, with the iPhone 18 Pro’s $100 price rise “better than feared” against an expected $200–250.

What none of this tells you

Every figure above is an outside estimate. Apple has published no sales target, no production figure and no supply guidance, and it will not — the first real data point is the December quarter earnings call, by which time Duo will have been on sale for about ten weeks.

Nor do these forecasts speak to the questions a buyer actually has. Shipment models do not test hinges. They do not measure the crease. They say nothing about the figures Apple has still not published — the hinge cycle rating, the battery capacity, the RAM. A device can ship 35 million units and still have a first-generation durability problem.

What to watch

Three dates settle most of this.

16 October. Pre-order shipping estimates are the first honest read on supply. If configurations slip into November within the hour, the constrained camp is right. If they hold, Goldman’s thesis gains ground.

23 October. Launch day stock, and the first teardowns — which will close several of the spec gaps Apple has left open.

Late January. Apple’s December-quarter results. No unit breakdown by model will appear, but the iPhone revenue line against a 57-million-unit expectation for the iPhone 18 family will tell you which of these forecasts was closest.

Until then, treat every number in this article as what it is: a model, built by people who do not have access to Apple’s production schedule, disagreeing with each other by a factor of seven.

For the device itself see the full iPhone Duo review, the pricing section, or the comparison against Galaxy Z Fold 8 — the phone whose market share these forecasts expect Duo to take.