Apple's iPhone Duo Foldable: Specs, Price and How It Stacks Up to Samsung

Apple's iPhone Duo, the company's first foldable phone, launched in stores on October 23, 2026, after preorders opened October 16. According to Apple, as cited by MacRumors, demand was "extraordinary," and the company told retail staff and customers to expect only limited walk-in stock on launch day.

What the iPhone Duo offers

The Duo is a book-style foldable: a 5.4-inch Super Retina XDR OLED cover display on the outside and a 7.6-inch Super Retina XDR OLED screen with a nano-texture, matte finish on the inside, according to specifications listed by GSMArena. Both panels run at 120Hz with HDR10 and Dolby Vision support.

Inside, the device runs Apple's A20 Pro chip, built on a 2-nanometer process, with 12GB of RAM across all storage tiers (256GB, 512GB, 1TB and 2TB), per GSMArena's listed specifications. Apple added a vapor-chamber cooling system and a dual-battery design split across the two halves of the phone, Macworld reported.

Unlike other recent iPhones, the Duo uses Touch ID instead of Face ID and relies on an under-display selfie camera on the inner screen plus a separate camera on the cover display, GSMArena's specification page shows. The rear camera system has two 48-megapixel sensors: a wide lens and an ultrawide lens.

Apple built the hinge and frame from grade 5 titanium, achieving IP68 dust and water resistance — a rating Samsung's foldables have not reached, according to SamMobile's reporting and GSMArena's specifications. Folded, the phone measures 117.8 x 84.1 x 11.3mm and weighs 254 grams; unfolded, it is 5.2mm thick, GSMArena's data shows.

Display supplier: a custom Samsung panel

Despite competing with Samsung in foldables, Apple sources its folding OLED panel from Samsung Display. Apple executives told SamMobile the panel was custom-built from the ground up to meet Apple's specifications, rather than an off-the-shelf part, because standard panels did not meet the company's requirements. Industry reports cited by SamMobile point to a three-year exclusive supply arrangement between Apple and Samsung Display for this specific panel.

Price and storage tiers

The iPhone Duo starts at $1,999 for the 256GB model and rises to $3,199 for 2TB of storage, according to Macworld; CBS News also reported the $1,999 starting price. Macworld noted the starting price is roughly $700 higher than the iPhone 18 Pro Max.

Shipping delays and demand

Within minutes of preorders opening on October 16, delivery estimates slipped past the October 23 launch date, and by that Friday afternoon backorders had reached late January 2027, CBS News reported. The outlet cited market analyst Max Weinbach, who said stock had sold out at every store in the New York City and Connecticut area within three minutes of preorders opening. Wedbush analyst Dan Ives, quoted by CBS News, described early demand as strong and running well ahead of supply. Ives projected Apple could sell around 10 million units over the following quarters and as many as 25 million through 2027, according to the same report.

Apple confirmed that walk-in stock would be limited at launch in the U.S., Australia, Austria, Belgium, Canada, Mexico, Germany, the Netherlands, Singapore, Spain, Sweden, Switzerland, Turkey, the U.K. and select stores in Italy, according to MacRumors. In markets including France, China, Japan, South Korea, India and the UAE, Apple required online store-pickup reservations instead of walk-in purchases, with Apple advising customers to check back starting October 24 for reservation availability, MacRumors reported.

Samsung's response

Samsung has reacted to the Duo by planning to expand its own foldable lineup to six models next year — the Galaxy Z Fold9, Fold9 Pro, Fold9 Ultra, Flip9, Z Slide and Z TriFold2 — according to 9to5Mac's reporting on Samsung's plans. The outlet described the broadened lineup as a response to Apple's device at a time when demand is substantially exceeding supply.

Samsung has said it welcomes the competition and has pointed to its devices' lighter weight compared with the Duo, while also moving up the launch timeline for its Galaxy Z TriFold 2, according to the same 9to5Mac report.

First reviews

Early reviews summarized by Macworld praised the Duo's hinge engineering and display quality but flagged inconsistent app optimization for the foldable form factor. Battery performance assessments varied: some reviewers reported full-day endurance, while others questioned stamina under sustained heavy use, per the same summary. Macworld's overview concluded the device is aimed at buyers who specifically want a foldable, rather than those simply seeking Apple's best conventional phone.