For seven years, foldable phones belonged to other brands. On September 9, 2026, Apple changed that by unveiling the iPhone Duo, its first foldable iPhone. Is it worth the hype? Here's what you need to know.
What Apple Has Introduced
The iPhone Duo is Apple's first foldable and the first major launch under CEO John Ternus. Apple calls it the biggest change to the iPhone since the original. It launched alongside the iPhone 18 Pro and iPhone 18 Pro Max.
Foldable Design
Instead of the tall "book" shape Samsung popularised, Apple chose a wider, passport-style body. Closed, it fits in a pocket and works one-handed. Open, it becomes the largest and thinnest iPhone ever.
Apple also tackled the biggest foldable complaints. A nano-texture finish makes the crease far less visible, the hinge is built from more than 100 parts, and the body is grade 5 titanium with an IP68 water and dust rating.
Key Features and Specs
- Displays: 7.6-inch inner and 5.4-inch outer Super Retina XDR screens
- Chip: A20 Pro
- Security: Touch ID in the side button (no Face ID)
- SIM: eSIM only
- Storage: 256GB to 2TB
- Colours: Star White and Night Sky
- Display and Camera
The inner screen is about 50% larger than the iPhone 18 Pro Max display, the biggest ever on an iPhone. The outer screen gives about 90% of the iPhone 18 Pro's screen area, so quick tasks don't need unfolding. Apple Pencil support arrives later this year.
The rear cameras are a 48MP Fusion Main (with 2x optical-quality telephoto) and a 48MP Ultra Wide. The fold adds tricks no other iPhone has, such as Smart Take, which snaps photos automatically when subjects pose, Duo Preview, which shows a live preview on the outer screen, and Kid Cue, which plays animations to get kids looking at the lens.
Performance and Software
The A20 Pro, the same chip as the iPhone 18 Pro models, is paired with a vapor chamber for cooling. Apple claims up to 35% better sustained performance than the iPhone 17 Pro. iOS 27 is redesigned for the fold, and Split View comes to iPhone for the first time. The new Siri AI launches in beta, in English first.
Battery and Charging
Two batteries, one in each half, work as a single pack. Apple quotes up to 24 hours of mixed use, and up to 44 hours of video on the outer screen. Charging reaches 50% in about 20 minutes wired, or about 30 minutes wirelessly. These are Apple's own lab figures, so wait for independent tests.
Pricing and Availability
The iPhone Duo starts at $1,999 (U.S.), making it the most expensive iPhone ever. Pre-orders open October 16 and it reaches stores in more than 70 countries on October 23, with 28 more markets following on October 30. Check local resellers for your region's pricing.
How It Compares with Earlier iPhones
The Duo shares its chip with the iPhone 18 Pro line but adds a much bigger screen and fold-based camera features. The trade-offs are Touch ID replacing Face ID, a thicker body when closed, and the highest starting price in iPhone history.
What It Means for Apple and the Market
Foldables are still under 3% of global smartphone shipments, but Apple's entry could change that. TrendForce estimates around 5 million Duo units in 2026, roughly 25% of the foldable market, though other analysts are far more optimistic. Rivals like Samsung are likely to speed up innovation and pricing moves in response, which is good news for buyers.
Conclusion
The iPhone Duo fixes many early foldable problems: the visible crease, weak multitasking and durability. The $1,999 price is the catch. Either way, foldables have officially entered the iPhone era.
