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iPhone Duo
Mis à jour en 2026

Everything you need to know about the iPhone Duo: eSIM compatibility by region (US, Europe, China, Japan), model numbers, Dual SIM configurations, and step-by-step instructions for activating your travel eSIM without roaming charges.

Does iPhone Duo Support eSIM?

Yes, the iPhone Duo has supported eSIM technology natively since its release in 2026.

Specifications

2

eSIMs that can be activated simultaneously

8

storable eSIM profiles

2026

Year of release

Travel or switch carriers easily without replacing your SIM card.

Find an eSIM for your next destination

Regional variants and eSIM compatibility

The same model may be sold in different versions depending on the country of purchase. Check the model number on the back of your device.

iPhone Duo

4 regions

Region of purchaseModelNano-SIMeSIMNotes
🇺🇸 United StatesA3447
×2

5G mmWave supported

🇯🇵 JapanA3719
×2
—
🇪🇺 Europe, United Kingdom, internationalA3720
×2
—
🇨🇳 Mainland ChinaA3721
×2
—

To check: Settings → General → About → Model Number. Information verified at 2026 — contact your carrier for confirmation.

What should you do before installing an eSIM on your iPhone Duo?

Before installing an eSIM on your iPhone Duo, check these important points:

  1. 1

    The iPhone Duo is unlocked (unlocked for all carriers).

  2. 2

    Your model is not a specific "Mainland China" model (eSIM restrictions may apply).

  3. 3

    Your iOS version is up to date (iOS 27+ minimum) to ensure maximum compatibility.

  4. 4

    Install the eSIM via our app, which guides you step by step.

  5. 5

    Activate your eSIM with an Internet connection (Wi-Fi or data) to avoid any blockages.

You might also want to check out

Check out other eSIM-compatible devices in the same series.

iPhone 18 Pro

iPhone 18 Pro

2026

eSIM compatible

iPhone Air

iPhone Air

2025

eSIM compatible

iPhone 17

iPhone 17

2025

eSIM compatible

iPhone 16

iPhone 16

2024

eSIM compatible

Do you have another device?

Instantly check if it supports eSIM technology.

Use your iPhone Duo with an eSIM worldwide

Browse our most popular destinations and get connected instantly.

Chureito Pagoda and snowy Mount Fuji behind the cherry blossoms in bloom
JP

Japan

From$1.40 USD
Turquoise lagoon framed by karst cliffs, at the Phi Phi Islands
TH

Thailand

From$2.30 USD
Bustling shopping street at twilight, in Seoul
KR

South Korea

From$1.90 USD
Manhattan skyline at sunset, featuring the Empire State Building
US

United States

From$1.70 USD
View all destinations

Frequently asked questions about the iPhone Duo and eSIM

Yes: the iPhone Duo is fully compatible with eSIM and works perfectly with our app that sells eSIMs. You can download, purchase, and install your eSIM directly through the app.

The validity period of an eSIM depends on the plan chosen and the activation method. In general, it begins when you first connect to the local operator's network. To ensure a smooth trip, we recommend activating your eSIM one week in advance. This will allow you to verify that everything is working properly and avoid any unexpected issues.

You can activate up to 2 eSIMss on the iPhone Duo. However, it can store up to 8 eSIM profiles.

Go to your iPhone Duo in Settings → Cellular (or Mobile) → Add an eSIM plan. If this option appears, your iPhone Duo is eSIM compatible. If not, check that iOS is up to date and that your device is unlocked.

Yes: the iPhone Duo is fully compatible with travel eSIMs. Buy an eSIM for your destination from our app, activate it before departure and keep your main SIM active: you use mobile data abroad without roaming charges while keeping your number.

No: travel eSIMs are linked to the device on which they have been installed. Once activated on the iPhone Duo, an eSIM cannot be moved to another phone. If you change handset, you will need to purchase a new eSIM for your new phone.

Yes: unlike a physical SIM, an eSIM cannot be removed or cloned in the event of theft. Its activation requires cryptographic authentication with the operator, and the data is stored in a secure chip embedded in the iPhone Duo, making SIM swapping attacks considerably more difficult.

Yes, if you switch to an eSIM with your main operator, your number is retained: your operator provides you with a QR code to scan from the the iPhone Duo settings. Travel eSIMs in our application do not contain a phone number: they are used for mobile data only, and complement your main line.

The eSIM remains associated with the lost device and cannot be transferred. Block your phone and contact your operator to suspend your main line. For a travel eSIM purchased via our application, contact our customer support team, who will examine your situation on a case-by-case basis.