Apple's September launch created two very different reasons to upgrade. The iPhone 18 Pro and 18 Pro Max push the traditional iPhone formula forward with variable-aperture photography, the A20 Pro chip and longer battery life. The iPhone Duo is the bigger shift: a book-style foldable with a 7.6-inch inner display, 5.4-inch outer display, titanium folding design and iOS 27 experiences built around multiple positions and a larger canvas.
U.S. prices: iPhone 18 Pro, Pro Max and iPhone Duo
Apple sells all three lines in 256GB, 512GB, 1TB and 2TB configurations. The Duo carries a major premium for its foldable hardware.
| 256GB | $1,199 |
| 512GB | $1,399 |
| 1TB | $1,799 |
| 2TB | $2,399 |
| 256GB | $1,299 |
| 512GB | $1,499 |
| 1TB | $1,899 |
| 2TB | $2,499 |
| 256GB | $1,999 |
| 512GB | $2,199 |
| 1TB | $2,599 |
| 2TB | $3,199 |
Apple's U.S. retail prices are shown before applicable state/local sales tax. Your total at checkout can therefore be higher than the headline price.
The foldable iPhone is officially the iPhone Duo
The Duo is Apple's first folding iPhone. Closed, it uses a 5.4-inch outer OLED display. Open it and you get a 7.6-inch folding OLED display with ProMotion up to 120Hz, Always-On display support and a nano-texture finish. Apple says both displays use the same aspect ratio so content scales more naturally as the device opens and closes.
Opened, the Duo is about 5.2 mm thick; folded, it is about 11.3 mm. It weighs 254 grams and comes in Night Sky and Star White. Apple rates it IP68 for water and dust resistance — notable for a first-generation foldable.
Two 120Hz displays
7.6-inch inner OLED plus a 5.4-inch outer OLED. Both support ProMotion and Always-On.
Apple Pencil support
Apple lists support for Apple Pencil (USB-C), turning the unfolded screen into a small writing and markup canvas.
Touch ID returns
The Duo uses a Touch ID fingerprint sensor rather than Face ID, integrated into its side-button design.
Dual-battery architecture
Apple uses batteries across both halves of the device. That matters when choosing an international carrier.
iPhone 18 Pro vs. Pro Max vs. Duo
| Feature | iPhone 18 Pro | 18 Pro Max | iPhone Duo |
|---|---|---|---|
| Display | 6.3" OLED | 6.9" OLED | 7.6" inner + 5.4" outer |
| Chip | A20 Pro | A20 Pro | A20 Pro |
| Main camera system | 48MP Pro Fusion triple-camera | 48MP Pro Fusion triple-camera | 48MP Dual Fusion |
| Dedicated telephoto | Yes | Yes | No |
| Biometrics | Face ID | Face ID | Touch ID |
| Max video playback | 36 hrs | 45 hrs | 44 hrs outer / 31 hrs inner |
| Weight | 211 g | 249 g | 254 g |
| Starting U.S. price | $1,199 | $1,299 | $1,999 |
The 18 Pro camera change is more than software
The iPhone 18 Pro's 48MP Fusion Main camera introduces variable aperture with four settings: ƒ/1.48, ƒ/1.8, ƒ/2.8 and ƒ/4.0. Apple uses six physical aperture blades, giving the camera more control over light and depth of field rather than relying only on computational blur.
The Pro models also include 48MP Ultra Wide and 48MP Telephoto cameras. That is one of the biggest reasons to choose a Pro over the Duo: the foldable has a 48MP Main and 48MP Ultra Wide system, but no dedicated telephoto camera.
A20 Pro, Wi-Fi 7 and battery life
All three flagship models use the A20 Pro with a 6-core CPU, 7-core GPU with Neural Accelerators and dual 16-core Neural Engines. The Pro models and Duo also support Wi-Fi 7 and Bluetooth 6.
Apple rates iPhone 18 Pro for up to 36 hours of video playback and Pro Max for up to 45 hours. The Duo is rated for up to 44 hours using the outer display or 31 hours using the inner display.
International buyers: check eSIM before you buy
The Duo is explicitly eSIM-only: Apple lists Dual eSIM, two active eSIMs, storage for eight or more eSIMs and no physical SIM-card compatibility. Before ordering for another country, confirm that your mobile carrier can provision an eSIM for the model you are buying.
Customs: what should an iPhone be declared as?
Under the Harmonized System, smartphones are classified under HS 8517.13. Individual countries can extend that six-digit code with additional tariff digits, so the final customs code used on an import entry may be longer.
The merchandise value should reflect the actual value of the phone. Customs authorities may collect VAT, GST, import duty, processing fees or other taxes depending on the destination. A country with zero customs duty on smartphones can still have a substantial VAT/GST bill on a $1,999 or $3,199 device.
For that reason, international buyers should think in terms of landed cost: phone price + U.S. sales tax if applicable + forwarding/shipping + destination tax/duty + any carrier clearance fee.
Can the new iPhones be shipped internationally with lithium batteries?
New smartphones commonly travel internationally with the rechargeable lithium-ion battery installed in the device, but the shipping service and destination must allow it. USPS, for example, permits qualifying lithium-ion batteries internationally only when they are properly installed in the equipment, subject to quantity, watt-hour, packaging and country restrictions.
USPS's current international rule allows a maximum of two lithium-ion batteries per shipment when installed in equipment, with each battery limited to 100 Wh. Because Apple describes iPhone Duo as using a dual-battery architecture, it deserves an extra carrier check before the label is purchased. Other carriers can apply their own acceptance, service and destination rules.
One more international issue: warranty service
Apple's U.S. warranty terms say the company may restrict iPhone warranty service to the country where Apple or an authorized distributor originally sold the device. International service can sometimes be available, but options, parts and response times vary by country.
That matters especially for the first-generation Duo. A folding display and hinge introduce hardware that is more specialized than a conventional iPhone. If you are buying a U.S. unit primarily to save money or get earlier availability, include the warranty/service tradeoff in the decision.
Release dates and colors
iPhone 18 Pro and iPhone 18 Pro Max: preorders opened September 12, with availability beginning September 18, 2026. Colors are Black, Silver, Glacier and Burgundy.
iPhone Duo: preorders begin October 16, with availability beginning October 23, 2026. Colors are Night Sky and Star White.
How to buy in the U.S. and ship internationally with Selectido
Once approved, your free U.S. shipping address is available securely inside your account.
Use your own name and your Selectido U.S. address at checkout, then register the incoming tracking number.
Your package is checked in at the hub so you can see that it arrived before international forwarding.
Selectido prepares the package for an eligible carrier/service, helps with customs information and can add Secure Packaging if requested.
Selectido forwarding is $14.99 per package plus the international carrier cost. Destination taxes and duties, when assessed, are separate.
Buying the new iPhone in the U.S.?
Get a free Selectido U.S. address, register the incoming package, and ship it internationally after it reaches the hub. If a U.S. store cannot accept your payment method, Assisted Purchase can review the request; purchases above $1,000 require a custom quote.
Create your Selectido accountWhich one makes the most sense?
Choose iPhone 18 Pro if you want the newest Pro camera system in a smaller body and the lowest price of these three. Choose Pro Max if battery life and a large conventional display matter most.
Choose iPhone Duo if the 7.6-inch folding screen is the reason you are upgrading. It is dramatically more expensive, heavier than Pro Max, and gives up the dedicated telephoto camera — but it is also the only one that turns from a compact phone into a small tablet-style workspace.
For international buyers, the best device is not automatically the one with the lowest U.S. price. Check your carrier, calculate the destination taxes, understand the warranty position, and use an international shipping service that can correctly handle a high-value lithium-battery device.
International buyer FAQ
How much is the iPhone Duo in the U.S.?
$1,999 for 256GB, $2,199 for 512GB, $2,599 for 1TB and $3,199 for 2TB, before applicable U.S. sales tax.
Is iPhone Duo really Apple's first foldable?
Yes. Apple officially introduced iPhone Duo on September 9, 2026 as its first foldable iPhone.
Can Selectido ship a new iPhone internationally?
In many cases, yes, using a carrier/service that accepts the installed lithium-ion battery and the destination. Exact availability depends on the country, device condition and carrier rules.
What customs code is used for an iPhone?
The six-digit HS 2022 subheading for smartphones is 8517.13. Destination countries can add additional tariff digits.
Can I declare a lower value to reduce customs?
No. The customs declaration should accurately reflect the merchandise value. An inaccurate value can create clearance, penalty and insurance problems.
Can Selectido purchase the phone for me?
Eligible Assisted Purchase requests can be reviewed. Because these models start above $1,000, an iPhone 18 Pro, Pro Max or Duo purchase requires manual review and a custom Assisted Purchase quote.
Primary sources
- Apple Newsroom — iPhone 18 Pro and iPhone 18 Pro Max
- Apple Newsroom — iPhone Duo
- Apple — iPhone 18 Pro technical specifications
- Apple — iPhone Duo technical specifications
- USPS Publication 52 — International lithium-battery Packaging Instruction 9E
- World Customs Organization — HS 2022, smartphones under 8517.13
- Apple — U.S. iPhone warranty terms