Phones
iPhone Duo vs iPhone 18 Pro: which should you choose?
Same chip, very different phones. One opens into a small tablet and costs $1,999. The other has the better cameras and Face ID for $800 less.
By the How To, Simply team · 1 October 2026 · 2 min read
- iPhone 18 Pro
- From $1,199, in shops since 18 September 2026
- iPhone Duo
- From $1,999, in shops from 23 October 2026
- Shared
- A20 Pro chip, iOS 27, up to 2 TB
Apple's two top iPhones of 2026 are built for different people. This comparison uses the figures Apple has published. It is not based on our own testing, and the Duo was not yet on sale when this was written.
Side by side
| iPhone 18 Pro | iPhone Duo | |
|---|---|---|
| Price (US) | From $1,199 (Pro Max from $1,299) | From $1,999 |
| Shape | Normal one-piece phone | Folds like a book: 5.4-inch screen outside, 7.6-inch inside |
| Chip | A20 Pro | A20 Pro |
| Rear cameras | Three 48 MP cameras: main with adjustable aperture, ultra-wide and 4x telephoto | 48 MP main and 48 MP ultra-wide, no telephoto |
| Unlocking | Face ID | Touch ID in the side button |
| Screen | 6.3 inches (Pro) or 6.9 inches (Pro Max) | 5.4 inches closed, 7.6 inches open |
| Battery (Apple's video figures) | Up to 34 hours (Pro), 43 hours (Pro Max) | Up to 31 hours on the inner screen, 44 on the outer |
| SIM | eSIM, plus a SIM card slot in some countries | eSIM only, everywhere |
| Storage | 256 GB to 2 TB | 256 GB to 2 TB |
Reasons to choose the iPhone 18 Pro
- Cameras. The adjustable aperture and the telephoto lens are both missing on the Duo. If photos matter most, this decides it.
- Face ID. It unlocks when you look at it, with wet hands or gloves.
- Price. $800 less buys a lot of storage, a watch or several years of a phone plan.
- A known design. A one-piece phone has no hinge and no soft inner screen to worry about.
Reasons to choose the iPhone Duo
- The big screen. Reading, maps, video and two apps side by side are simply better at 7.6 inches.
- One device instead of two. If you carry a phone and a small tablet, the Duo can replace both.
- A small phone when closed. The 5.4-inch outer screen is easier to use with one hand than any current Pro.
What nobody knows yet
How the hinge and inner screen hold up over years of daily use, and how the battery behaves in real life. Folding phones from other makers show a visible crease and need more care with dust and pressure. If you plan to keep your phone for four or five years, there is a good case for waiting for long-term reports, or for the second generation.
Our view
For most people the iPhone 18 Pro is the sensible choice: better cameras, a proven design and a much lower price. The Duo is for people who already know they want a folding phone and are comfortable paying for a first-generation product.
More detail on each: iPhone 18 Pro: what is new and iPhone Duo explained.
Questions readers ask
Which is more expensive, the iPhone Duo or the iPhone 18 Pro?
The iPhone Duo starts at $1,999 in the United States. The iPhone 18 Pro starts at $1,199 and the Pro Max at $1,299.
Do both phones have the same chip?
Yes. Both use the A20 Pro chip.
Which has the better camera?
On paper the iPhone 18 Pro: it has a main camera with an adjustable aperture and a separate telephoto camera. The Duo has two rear cameras and no telephoto.
Which one has Face ID?
The iPhone 18 Pro. The iPhone Duo uses Touch ID in the side button.
Can I use a physical SIM card?
Not in the iPhone Duo, which is eSIM-only in every country. For the iPhone 18 Pro it depends on the country, so check Apple's page for yours.
- Apple Newsroom: Apple unveils iPhone Duo
- Apple: iPhone 18 Pro and 18 Pro Max technical specifications
- 9to5Mac: Apple announces iPhone 18 Pro
- Tom's Guide: iPhone Duo is official
This article is based on the sources above. We have not tested these products ourselves. Prices and availability change; check the maker's website before you buy.