Buy a refurbished iPhone Duo

Refurbished iPhone Duo units are still rare. Once tested devices arrive, they appear here with a 1-year warranty.

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The foldable iPhone: barely available second-hand yet

The Duo is the iPhone that unfolds: closed for calls and messages, open for films, maps or two apps side by side. It suits anyone who no longer wants to carry a phone and a tablet separately. Storage: 256 GB to 2 TB.

Because the model is so new, used units are hardly available at the moment. Meanwhile, have a look at the iPhone 17 or browse all iPhones. When one comes in, we test it in Switzerland and check the battery. You then get a 1-year warranty, extendable to 3 years, and 14 days to return it.

FAQ Buy a refurbished iPhone Duo

Let’s take a look together at the benefits and important considerations when buying.

What makes the iPhone Duo so special?

The iPhone Duo is Apple’s first foldable iPhone: a smartphone with a 5.4-inch display when folded and a 7.6-inch screen when unfolded - the largest iPhone display to date. It also features the A20 Pro chip and a titanium design that is just 5.2 mm thin when unfolded.

How large is the iPhone Duo's display?

Inside, the iPhone Duo has a foldable 7.6-inch OLED display (1878 x 2670 pixels, 430 ppi) with a nanotexture coating to reduce reflections; on the outside, a 5.4-inch display (1398 x 2034 pixels, 460 ppi). Both offer ProMotion up to 120 Hz, Always-On, and up to 3000 nits outdoors.

How good is the camera on the iPhone Duo?

The 48 MP Dual Fusion camera system consists of a 48 MP main camera (ƒ/1.6) with 2x optical-quality telephoto and a 48 MP Ultra Wide camera, plus up to 10x digital zoom. On the front, there is a 12 MP Center Stage camera on the external display and a FaceTime camera under the internal display.

How powerful is the A20 Pro chip in the iPhone Duo?

The iPhone Duo features the same A20 Pro chip as the iPhone 18 Pro: 2-nanometer process, 6-core CPU, 7-core GPU, and dual 16-core Neural Engine. This keeps split-view multitasking, gaming, and Apple Intelligence running smoothly even on the large foldable display.

How long does the iPhone Duo battery last?

Thanks to two batteries, the iPhone Duo lasts up to 24 hours with typical use. Video playback lasts up to 44 hours using the outer display and up to 31 hours using the inner display. With 60 W, you can charge to 50% in about 20 minutes, wirelessly with MagSafe or Qi2 at up to 25 W.

What storage capacities are available for the iPhone Duo?

The iPhone Duo is available with 256 GB, 512 GB, 1 TB, or 2 TB - plenty of space for apps, photos, and videos on the large display.

What colors is the iPhone Duo available in?

The iPhone Duo is available in Midnight Sky and Starlight White.

Is the iPhone Duo waterproof and shockproof?

Yes - despite its folding mechanism, the iPhone Duo is protected against water and dust at depths of up to 6 meters for 30 minutes in accordance with IP68. The frame and hinge cover are made of titanium, Ceramic Shield 2 protects the front, and the inner display has a scratch-resistant coating.

What software features does the iPhone Duo offer?

The iPhone Duo runs on iOS 27, specially adapted for the foldable display - including Split View for using two apps side by side. Apple Intelligence is supported, and it is unlocked via Touch ID in the side button.

How does the iPhone Duo differ from other models in the series?

Unlike the iPhone 18 Pro and Pro Max, the duo has a foldable display, a titanium rather than aluminum body, and Touch ID instead of Face ID. It uses eSIM exclusively (no physical SIM card) and has a dual rather than triple camera without a separate telephoto lens.