iPhone Duo vs iPhone 18 Pro: which should you choose?

Apple
iPhone Duo

The iPhone Duo is a phone-and-tablet all-in-one, offering an extra screen at a much higher price than the iPhone 18 Pro. It also loses some key Pro features. Pros
Excellent design
Two screens
Stylus support

Cons
Very expensive
Worse cameras
No Face ID

Apple
iPhone 18 Pro

The iPhone 18 Pro is a much cheaper phone than the iPhone Duo, with better cameras to boot. But its single screen makes it far less versatile. Pros
Superb cameras
Much lower price
Has Face ID

Cons
Just one screen
No stylus support
Smaller battery

The iPhone Duo has been a long time coming, but is Apple’s first foldable a home run? And even if it is, do you even really need a dual-screen device? Those are questions you might be asking yourself if you’re in the market for a new iPhone — especially when the iPhone 18 Pro is also available, which only has one display but is a better device in various other ways. So, to help you decide which of these two models is best for you, we’ve compared the iPhone Duo and iPhone 18 Pro across various categories, including price, display, and design. Happy decision-making! iPhone Duo vs iPhone 18 Pro: specs comparison
Before we look in depth at the key elements of the iPhone Duo and iPhone 18 Pro, the specs table below provides an overview of their similarities and differences. iPhone Duo
iPhone 18 Pro
Dimensions:
117. 8 x 84. 1 x 11. 3mm (folded) / 117. 8 x 164. 6 x 5. 2mm (unfolded)
150 x 71. 9 x 8. 8mm
Weight:
254g
211g
Display:
7. 6-inch Super Retina XDR OLED (foldable) / 5. 4-inch Super Retina XDR OLED (cover)
6. 3-inch Super Retina XDR OLED
Refresh rate:
1Hz–120Hz
1Hz–120Hz
Peak brightness:
3,000 nits
3,000 nits
Chipset:
A20 Pro
A20 Pro
RAM:
12GB
12GB
Rear cameras:
48MP main, 48MP ultra-wide
48MP main, 48MP ultra-wide, 48MP telephoto
Front camera:
12MP cover, 4MP under-display
18MP
Battery:
4,883mAh
4,288mAh (eSIM-only) / 4,056mAh (physical SIM)
Charging:
50% in 20 minutes
50% in 15 minutes
Storage:
256GB / 512GB / 1TB / 2TB
256GB / 512GB / 1TB / 2TB

iPhone Duo vs iPhone 18 Pro: price and availability
The iPhone Duo Lance Ulanoff / Future The iPhone 18 Pro Future/Jacob Krol The iPhone Duo and iPhone 18 Pro were both announced in September 2026. But while the iPhone 18 Pro shipped shortly after its announcement, the iPhone Duo wasn’t available until October 23. Both phones are available now, though, across much of the world. The iPhone Duo starts at $1,999 / £1,999 / AU$3,499, for which you’ll get 256GB of storage. There’s also a 512GB model for $2,199 / £2,199 / AU$3,899, a 1TB version for $2,599 / £2,599 / AU$4,699, and a 2TB model for $3,199 / £3,199 / AU$5,899. The iPhone 18 Pro is a lot more affordable (relatively speaking), while still being expensive. This device starts at $1,199 / £1,199 / AU$2,099 for 256GB of storage, rising to $1,399 / £1,399 / AU$2,499 for 512GB, $1,799 / £1,799 / AU$3,299 for 1TB, and $2,399 / £2,399 / AU$4,499 for 2TB. So, the iPhone Duo’s starting price is some $800 / £800 / AU$1,400 higher than the iPhone 18 Pro’s; that difference is the price of a high-end phone (or indeed the new iPad mini ) all on its own. So while you’re essentially getting a phone and tablet all in one with the Duo, you’re also paying handsomely for that privilege. Apple iPhone Duo pricing Storage
US price
UK price
AU price
256GB
$1,999. 99
£1,999
AU$3,499
512GB
$2,199
£2,199
AU$3,899
1TB
$2,599
£2,599
AU$4,699
2TB
$3,199
£3,199
AU$5,899

Apple iPhone 18 Pro pricing Storage
US price
UK price
AU price
256GB
$1,199
£1,199
AU$2,099
512GB
$1,399
£1,399
AU$2,499
1TB
$1,799
£1,799
AU$3,299
2TB
$2,399
£2,399
AU$4,499

iPhone Duo vs iPhone 18 Pro: design
The iPhone Duo Lance Ulanoff / Future The iPhone 18 Pro Future/Jacob Krol The iPhone Duo doesn’t really look like any other iPhone, and not just because it folds. When folded shut, you might expect it to look like the iPhone 18 Pro, but you’d be wrong, as it has a much shorter, passport-shaped footprint, coming in at 117. 8 x 84. 1 x 11. 3mm compared to the iPhone 18 Pro’s 150 x 71. 9 x 8. 8. mm size. Of course, the iPhone Duo is substantially larger when unfolded, opening out to 117. 8 x 164. 6 x 5. 2mm (we’ll touch on their displays in the next section). Other differences include the phones’ respective camera arrangements. The iPhone Duo has a punch-hole camera in the top right corner of its cover display, and an under-screen camera in its foldable display. The iPhone 18 Pro, meanwhile, has a much larger cut-out for its Dynamic Island, but this larger opening also allows for Face ID, which the iPhone Duo lacks. On the back, the iPhone Duo has a horizontally arranged dual-lens camera, while the iPhone 18 Pro has a larger triple-lens camera block (which Apple describes as the ‘camera plateau’). The Duo is also unsurprisingly heavier at 254g to the iPhone 18 Pro’s 211g, and their colors differ, with the iPhone Duo being sold in Night Sky and Star White shades, while the iPhone 18 Pro is available in Black, Silver, Glacier, and Burgundy options. The iPhone Duo (folded) and iPhone 18 Pro Future The iPhone Duo (unfolded) and iPhone 18 Pro Future Their materials differ a bit too, with the iPhone Duo having a titanium frame and a glass back (not unlike the iPhone Air ), while the iPhone 18 Pro has an aluminum frame and uses a mix of metal and glass on the back. However, both phones have an IP68 rating for dust and water resistance, and both use Ceramic Shield 2 on the front and Ceramic Shield on the back — so they should be similarly durable, aside from the inherent fragility that comes with a second screen and a hinge mechanism (Apple has confirmed to TechRadar that the Duo’s viral screen-cracking issue only affected a "small number of units" at launch, so you shouldn’t worry about experiencing that level of vulnerability). Ultimately, we praised the designs of both these phones, with our iPhone Duo review describing it as “beautifully designed and engineered,” while our iPhone 18 Pro review highlighted its “fantastic” new shades. There’s certainly a learning curve to be experienced with the iPhone Duo’s folding form factor — its volume buttons, for instance, are positioned on the top, not the side — while the iPhone 18 Pro feels extremely familiar in the hand. But we’d urge you to try the Duo out for yourself in a store before dismissing its design as a reason not to buy it. In essence, both of these devices are a treat to use. iPhone Duo vs iPhone 18 Pro: display

(Image credit: Future) If you’re considering the iPhone Duo, then its screen is probably the most important factor for you, since it has two of them. The Duo’s main display is a 7. 6-inch 1878 x 2670 foldable LTPO Super Retina XDR OLED panel, with a 120Hz refresh rate, 430 pixels per inch, and a peak brightness of 3,000 nits. The aspect ratio of this inner display is a content-friendly 1. 4:1, giving you room to run two full apps side-by-side, play games on a larger canvas, or watch wide-format media (note, though, that most YouTube and Netflix content is still displayed in 16:9). Crucially, this inner screen also features a nano-texture coating to reduce glare and make the Duo’s crease appear invisible face-on. Sure, you can see this crease when looking at an angle, but nano-texture really does work for making you forget about the crease during general use. Being a foldable phone, the iPhone Duo also has a 5. 4-inch 1398 x 2034 LTPO Super Retina XDR OLED cover screen, which likewise has a 120Hz refresh rate, a peak brightness of 3,000 nits, and around 460 pixels per inch. The iPhone Duo Lance Ulanoff / Future The iPhone 18 Pro Future/Jacob Krol The iPhone 18 Pro just has one screen, but it’s a good one. It’s a 6…