To use a travel eSIM on an iPhone 18 Pro or Pro Max, check the exact model, carrier lock and package conditions. Follow the delivered installation instructions, then select the correct mobile-data line. Adding an ESIM0 travel plan is different from transferring your usual phone number to a new device.
iPhone 18 Pro eSIM support depends on the version
Apple introduced iPhone 18 Pro and Pro Max on September 9, 2026. Its announcement identifies eSIM-only versions in selected markets. Before buying a physical SIM for your holiday, confirm your device version and whether it has a SIM tray.
A compatible phone can still be carrier-locked. Open Settings, General, About and check Carrier Lock. Apple identifies No SIM Restrictions as the unlocked status; the relevant carrier handles unlocking, not Apple.
Travelling with an iPhone Air, iPhone 17 or another model instead? Check your exact reference on the compatible devices page. A product photo or family name is not sufficient to establish your particular phone’s SIM arrangement.
Adding travel data is different from transferring a number
| Goal | Action | Important limit |
|---|---|---|
| Move your home number to the new phone | Use the carrier’s supported transfer process | Carrier support determines availability |
| Add holiday data | Install the purchased travel eSIM | ESIM0 provides data without a phone number |
| Move an installed travel eSIM | Ask support about that profile | Do not assume its QR code can be reused |
Apple’s Quick Transfer is for plans supported by their carriers. It does not establish that every travel profile can move between phones. If an ESIM0 profile is already installed elsewhere, ask support before deleting it or attempting another installation. Transferring your usual number and purchasing a destination data plan are separate tasks.
Choose the destination and validity before scanning
Write down the countries on your route, the days you need data and your main uses: maps, messages, video or a connected laptop. Match these to the allowance, validity and conditions of the actual package. Browse the current Japan, France or United States catalogue for your destination. A plan for one country does not automatically cover the others.
Check what starts validity before installing. Keep your instructions available, and arrange another screen if you need to scan the QR code. Keep that installation code private rather than posting it in a public help forum. Read the activation guide and your order’s own instructions before taking action.
Install the eSIM and select travel data
- Prepare reliable Wi-Fi and open your order’s installation instructions.
- Use Add eSIM in cellular settings and the instructed QR method. On supported iOS versions, Apple also offers adding an eSIM from a QR displayed in certain apps.
- Label the line clearly, such as Travel, and check its destination and package in your account.
- At the destination, choose that line for mobile data and follow its roaming instructions. Turn off automatic data switching if you do not want data to fall back to the home line.
Use the iPhone installation instructions for screen-level guidance. Labels can vary with language and software version. Adding a profile is not proof that every condition for a working connection has already been met.
Keep your number without confusing the two lines
Choose mobile data separately from services on your usual number. Read your home carrier’s rates for calls and SMS abroad. Our dual-SIM guide explains the separation; the ESIM0 line remains data-only.
Before a trip, prepare a small checklist: the data line you intend to use, the package’s expiry rule, offline accommodation details and support contact. This is more useful than assuming a new phone automatically chooses the best package for you. For a working trip, confirm hotspot support on the exact offer before relying on a laptop connection.
If you see No Service, check destination coverage, validity, whether the line is enabled and the delivered instructions. Keep the installed profile while diagnosing. Read the eSIM troubleshooting guide or contact support with the order reference and device details, rather than repeatedly reinstalling.
FAQ
Does iPhone 18 Pro have a physical SIM slot?
The answer depends on its market and version. Apple announces eSIM-only versions in selected countries, so check your own device.
Does an ESIM0 eSIM give me a new number?
No. It provides mobile data without a local number, conventional calls or SMS.
Can I reuse my QR code on my new iPhone?
Do not assume that is supported. Ask about the specific profile before deleting its existing installation.
Should I install before leaving?
Prepare Wi-Fi and your instructions, but read the validity rule first. Early installation may be unsuitable if validity starts when you install.
Does a new iPhone prevent roaming charges?
No. Charges depend on the lines used and their carrier contracts. Check data, calls and SMS separately.
