iPhone Duo is the first foldable iPhone, known from leaks as the iPhone Fold. Apple revealed it on September 9, 2026: the phone unfolds like a book, has a 7.6-inch internal screen, a 5.4-inch external screen, and Touch ID instead of Face ID. In Poland, it costs from 9,999 PLN, pre-orders start on October 16, and sales begin on October 23.
We waited seven years for a foldable iPhone since the debut of the first Galaxy Fold. In leaks, it was also referred to as iPhone Ultra or iPhone 18 Ultra, and before the conference we gathered all the reports in the announcement of the iPhone 18 Pro launch. Apple did not explain where the name Duo came from.
Below is the specification confirmed by Apple, the Polish price list, differences compared to the Galaxy Z Fold 8, and three compromises that are less talked about. At the end, a practical section: what to use to charge the iPhone Duo and how to protect its screens.
iPhone Duo specification: key parameters
| Parametr | iPhone Duo |
|---|---|
| Wewnętrzny ekran | 7,6″, OLED, 1878 × 2670 px, 120 Hz, matowe wykończenie |
| Zewnętrzny ekran | 5,4″, OLED, 1398 × 2034 px, 120 Hz |
| Wymiary po złożeniu | 117,8 × 84,1 × 11,3 mm |
| Grubość po rozłożeniu | 5,2 mm |
| Masa | 254 g |
| Obudowa | tytan Grade 5, Ceramic Shield 2 z przodu, Ceramic Shield z tyłu |
| Czip | A20 Pro z komorą parową |
| Aparaty z tyłu | 48 MP główny + 48 MP ultraszerokokątny |
| Aparaty z przodu | 12 MP Center Stage + FaceTime pod ekranem |
| Biometria | Touch ID w przycisku bocznym |
| Bateria | dwie baterie, do 24 h typowej pracy |
| Szybkie ładowanie | 50% w ok. 20 min (ładowarka 60 W) |
| Ładowanie bezprzewodowe | MagSafe i Qi2 do 25 W |
| Złącze | USB-C (USB 3 do 10 Gb/s, DisplayPort) |
| Łączność | 5G, modem Apple C2, Wi-Fi 7, Bluetooth 6 |
| Odporność | IP68 (6 m, 30 min) |
| Karta SIM | wyłącznie Dual eSIM |
| Pamięć | 256 GB, 512 GB, 1 TB, 2 TB |
| Kolory | gwiezdna biel, nocne niebo |
Dane: specyfikacja techniczna iPhone’a Duo na stronie Apple
Po lewej iPhone Duo po rozłożeniu, po prawej oba kolory: gwiezdna biel i nocne niebo. Źródło: Apple Newsroom
Kiedy premiera iPhone’a Duo w Polsce i ile kosztuje?
iPhone Duo trafi do Polski w pierwszej fali i kosztuje od 9 999 zł za wersję 256 GB. Sklep Apple podaje dwie daty: przedsprzedaż od piątku 16 października o 14:00 i dostępność od piątku 23 października 2026. Tego dnia telefon debiutuje w ponad 70 krajach i regionach, a 28 kolejnych dostanie go tydzień później.
To prostuje spekulacje, że składany iPhone może na starcie ominąć Polskę. W sklepie Apple działa już konfigurator iPhone’a Duo z cenami w złotówkach.
| Pamięć | Cena w Polsce | Cena w USA |
|---|---|---|
| 256 GB | 9 999 zł | 1 999 USD |
| 512 GB | 10 999 zł | 2 199 USD |
| 1 TB | 12 999 zł | 2 599 USD |
| 2 TB | 15 999 zł | 3 199 USD |
Leaks about the iPhone Fold mentioned a price of around $2,000, and they turned out to be accurate. The Polish price includes 23% VAT, while the American price is quoted without tax, which explains a large part of the difference in conversion. The 2 TB variant costs 15,999 zł, which is 5,700 zł more than the iPhone 17 Pro Max with the same memory in Apple’s August price list.
Two screens and a hinge: how the foldable iPhone works
The iPhone Duo opens like a book, just like the Galaxy Z Fold. When folded, it has a passport format: the 5.4-inch external screen provides 90% of the display area of the iPhone 18 Pro. When opened, you get 7.6 inches, and according to Apple, it’s a screen that is 50% larger than that of the iPhone 18 Pro Max.
According to Apple, both screens have the same aspect ratio, so content scales proportionally, and the transition from the small screen to the large one is smooth. Additionally, there’s ProMotion up to 120 Hz, Always-On, and brightness up to 3000 nits in sunlight. By 2026, the Duo will support the Apple Pencil (USB-C).
Screen crease and matte finish
The internal screen features a nanostructured finish, which is a matte surface known from MacBook Pros and iPad Pros. It reduces glare and, according to Apple, limits the visibility of the crease line. The screen is protected by a polymer layer that, according to Apple, is up to 40% stiffer than materials previously used in the industry.
The panel is surrounded on both sides by layers of durable glass, glued in such a way that they slide relative to each other like the pages of a book. Underneath, a titanium plate reinforces the whole structure. The hinge is made up of over 100 components, and together with the built-in magnet system, it ensures a secure and pleasant closing.
Po lewej ekran zewnętrzny i wewnętrzny, po prawej Split View z Safari i aplikacją Siri. Źródło: Apple Newsroom
iOS 27 na składanym ekranie
System dostał osobny układ pod iPhone’a Duo. Dock i przyciski nawigacji przesuwają się na bok, a Dynamic Island wyświetla się pionowo przy krawędzi. Po rozłożeniu widzisz dwie strony ekranu głównego, z widżetami Dzisiaj po lewej.
Największa nowość to Split View, czyli dwie aplikacje otwarte obok siebie. Żaden wcześniejszy iPhone tego nie potrafił, a na czerwcowej prezentacji iOS 27 podczas WWDC 2026 Apple jeszcze tego trybu nie pokazało. Odłożony na stół Duo przechodzi w tryb StandBy na dowolnym ekranie, także bez ładowarki.
Netflix, Zoom i Slack mają już wersje dopasowane do dużego wyświetlacza.
Aparaty iPhone’a Duo: dwa obiektywy 48 MP bez teleobiektywu
At the back, there are two cameras: the main Fusion 48 MP (f/1.6, sensor stabilization) and the ultra-wide Fusion 48 MP (120°, macro), the same as in the iPhone 18 Pro. Instead of a telephoto lens, you get 2x optical quality zoom: the camera crops the center of the 48 MP sensor and saves a 12 MP photo.
With the main camera, you can record 4K Dolby Vision video at 120 fps. At the front, there are two cameras: Center Stage 12 MP on the external screen and a FaceTime camera hidden under the internal screen.
Sample photos from Apple: on the left, the main 48 MP camera, on the right, a group selfie from the Center Stage camera. Source: Apple Newsroom
Two screens provide features that are not available on any other iPhone:
- Duo Preview: the photographed person sees the frame on the external screen and can adjust their pose.
- Selfie tylnymi aparatami: z podglądem na zewnętrznym ekranie, w wyższej rozdzielczości niż z przodu.
- Inteligentna migawka: model AI sam robi zdjęcie, gdy wykryje, że pozujesz.
- Animacja dla dziecka: na zewnętrznym ekranie pojawiają się Fistaszki, które ściągają wzrok malucha w stronę obiektywu.
- Duo FaceTime: druga osoba dołącza do rozmowy przez ekran zewnętrzny.
Wydajność i bateria składanego iPhone’a
Duo ma ten sam czip A20 Pro co iPhone 18 Pro, ale chłodzi go komora parowa połączona bezpośrednio z procesorem. Według Apple przy długim obciążeniu daje to do 35% wyższą wydajność niż w iPhonie 17 Pro. Punktem odniesienia jest zeszłoroczny model, a nie iPhone 18 Pro z tym samym czipem.
Zysk ma być odczuwalny w grach i przy długiej pracy na dwóch aplikacjach.
W każdej połowie obudowy siedzi osobna bateria, a obie działają jak jedna. Apple nie podaje pojemności w mAh, tylko czasy pracy:
| Scenariusz | Czas pracy według Apple |
|---|---|
| Typowe użytkowanie | do 24 h |
| Wideo na ekranie zewnętrznym | do 44 h |
| Wideo na ekranie wewnętrznym | do 31 h |
| Streaming na ekranie zewnętrznym | do 37 h |
| Streaming na ekranie wewnętrznym | do 26 h |
Three compromises of the foldable iPhone
There will be time for evaluation after the tests, but the specifications already show three weaknesses of the Duo. Check them out before ordering.
1. It is the heaviest iPhone in history. It weighs 254 g and has a thickness of 11.3 mm when folded. Even the iPhone 18 Pro Max weighs 249 g. According to 9to5Google’s report, the Galaxy Z Fold 8 weighs 201 g at 9.7 mm, while the Pixel 11 Pro Fold weighs 239 g at 10.1 mm.
The slimmest iPhone in the history of the Duo is only when unfolded: 5.2 mm.
2. No Face ID or telephoto lens. Apple is returning to Touch ID on the side button, which works when the phone is open and closed. You can also unlock the Duo with an Apple Watch. If you often take photos from a distance, the iPhone 18 Pro with a 4x telephoto lens will do it better.
3. Only eSIM and no Apple Intelligence in Polish. The Duo does not have a tray for a physical SIM card and supports only eSIM, with a maximum of two active numbers at the same time. Apple Intelligence works in 16 languages, among which Polish is not included.
The new Siri AI launches on September 14 as a beta in English, but according to Apple, it will initially not be available in the EU, and thus also in Poland.
You also won’t be able to immediately use the new iPhone Handoff feature (one number on two iPhones). Initially, it only works on T-Mobile networks in the USA and Telekom in Germany.
Cases and screen protection for the iPhone Duo
Apple showed off two of its own cases right away. iPhone Duo Case consists of two parts, one for each half, and costs 399 PLN. iPhone Duo Folio has a stand that allows you to set the phone at different angles and costs 629 PLN. Both can be ordered from October 16.
On the left, the two-part iPhone Duo Case, on the right, the Folio with a stand. Source: Apple Newsroom
The case for the foldable iPhone usually consists of two separate shells, as it needs to allow the hinge freedom of movement. No case from iPhone 17 or 18 will fit. Apple provided the official dimensions on September 9, so accessory manufacturers are just starting production.
Screen protection for the foldable follows its own rules, which we have already outlined in glass and films for the Galaxy Z Fold 8:
- External screen: tempered or hybrid glass, just like in a regular iPhone.
- Internal screen: only flexible film, as rigid glass will not withstand bending.
- Do not remove the factory layer of the internal screen: it is part of the display, not a transport film.
- Matte effect: glossy film will cover the nanostructural finish, so choose matte film for Duo.
We have already prepared the category of accessories for iPhone Duo, with separate sections for cases, films, and glasses. Products will appear in it when manufacturers release models compatible with Duo.
How to charge the iPhone Duo: chargers and power banks
There is no need to wait here. The box does not include a wall charger, and the iPhone Duo has specific requirements. Apple provides two values:
- 50% in about 20 minutes with a USB PD wall charger of 60 W or higher and a USB-C cable supporting 60 W,
- 50% in about 30 minutes with a MagSafe charger connected to a wall charger of 35 W or stronger.
Wireless charging works with MagSafe and Qi2 up to 25 W. Qi2 15 W chargers should also work, just slower. The 20 W wall charger from the iPhone 12 era will also suffice, but charging will take longer than Apple states.
The Duo will be available for sale only on October 23, so the chargers below were selected based on the parameters provided by Apple, not from our own tests with this phone.
UGREEN Nexode Air 65W
UGREEN Nexode Air 65W exceeds the 60 W threshold that Apple requires for the fastest charging. It has two USB-C ports and one USB-A, and thanks to GaN (gallium nitride) technology, it is small despite its high power. You will get the full 65 W with one connected device. When charging two at the same time, the power is divided between the ports, and the Duo may not receive the required 60 W.
Satechi 3-in-1 Qi2 25W
Satechi 3-in-1 Qi2 25W ładuje telefon pełną mocą Qi2 25 W, a przy okazji zegarek i słuchawki. Składana konstrukcja zajmuje po złożeniu niewiele miejsca, więc sprawdzi się też w podróży.
Tech-Protect PB40 LifeMag 10 000 mAh
Tech-Protect PB40 LifeMag is a magnetic power bank in the Qi2.2 standard, meaning it supports 25 W wireless charging. You attach it to the back of your phone and charge on the go without a cable. With a phone weighing 254 g, you will definitely feel each power bank in your hand.
If you prefer a simple desk charger, Tech-Protect A54 MagSafe 25W Qi2.2 provides the same power in the form of a single disc.
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You can find more models in the categories inductive chargers and MagSafe accessories.
Is it worth buying the iPhone Duo?
It depends on what you use your phone for:
- Buy if you want a large screen for movies, reading, and working on two applications, and you do not plan to leave the Apple ecosystem.
- Choose the iPhone 18 Pro if you care about the telephoto lens, Face ID, and a lighter body. It is also noticeably cheaper.
- Consider Galaxy Z Fold 8 if you use Android and weight and price matter more than water resistance.
Also remember that this is the first generation. Apple did not specify how many opening cycles the hinge is designed for, and weaknesses of the first generation in new device categories are usually only improved in the second.
Summary
iPhone Duo is the first foldable iPhone and also the heaviest and most expensive iPhone that Apple has released. Key facts:
- Poland is in the first wave. Pre-order on October 16 at 2:00 PM, sales start on October 23, price from 9,999 PLN.
- Two screens with the same aspect ratio. 5.4 inches when folded, 7.6 inches when unfolded, with a matte finish and Split View.
- Compromises are real. 254 g, 11.3 mm when folded, no Face ID and telephoto lens, only eSIM, and Siri AI does not work in the EU at launch.
- The advantage over Samsung is IP68 and the ecosystem. Galaxy Z Fold 8 is lighter and cheaper.
- You can buy chargers today. A 60 W wall charger and a 25 W Qi2 charger will utilize the full capabilities of Duo.
Tak, iPhone Duo jest wyposażony w technologię Face ID, która umożliwia odblokowanie telefonu za pomocą rozpoznawania twarzy.
No. The foldable iPhone has Touch ID in the side button, which works when the phone is open and closed. You can also unlock it with an Apple Watch.
Can I split the screen into two apps on the iPhone Duo?
Yes. Split View opens two apps side by side on the inner screen, and even two windows of the same app, e.g. Safari. This is the first iPhone with such a feature.
Can I put two SIM cards in the iPhone Duo?
You can’t insert a physical card at all. The iPhone Duo only supports Dual eSIM, meaning two active numbers in digital form, so check if your operator issues eSIM before purchasing.
Can I apply tempered glass to the inner screen of the iPhone Duo?
No. Only flexible film is suitable for the inner screen, as rigid glass will not withstand bending. Use tempered glass only on the outer screen.
Sources: Apple press release about the iPhone Duo, technical specifications of the iPhone Duo, iPhone Duo prices in the Apple store, prices in the USA and release dates on MacRumors, comparison of weight and thickness with Androids on 9to5Google, list of countries and languages from Apple Intelligence
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