Using eSIM on your iPhone during international travel eliminates the need to purchase, carry, or swap physical SIM cards. Even if your iPhone is lost or stolen, eSIM cannot be physically removed from the device, making it safer than a physical SIM. However, not all iPhones and plans support eSIM, so it’s crucial to check your device model, carrier, and the compatibility of your destination country or region before departure. You also won’t have to wait for a physical SIM to be delivered.
Pre-Departure Checklist
- Confirm that your device is an iPhone XS, iPhone XS Max, iPhone XR, or a later model.
- Check if the wireless carrier or global service provider you plan to use supports eSIM.
- Ensure that you can connect your iPhone to the Wi-Fi network or hotspot you will use to activate the eSIM.
- Contact your carrier to confirm that your current cellular plan supports eSIM.
- Verify the cellular band compatibility between your iPhone model and the country or region you are visiting.
In some countries or regions, eSIM-only iPhone models can be activated without Wi-Fi. However, this is an exception and should not be generalized as a standard activation condition. If your iPhone has a SIM tray, you can use both a physical SIM and eSIM while traveling. Supported iPhone models can also activate two eSIMs simultaneously. For specific installation instructions, refer to Apple’s eSIM setup guide.
Selecting Your Connection Method
| Method | What to Check First | How to Purchase/Use |
|---|---|---|
| International Roaming with Existing Carrier | Check if your current plan includes international roaming and if there are any additional charges. | Use the international roaming or travel pass/plan offered by your carrier. |
| Local Carrier's Travel eSIM | Confirm whether your iPhone is unlocked to use a different carrier. | Purchase a travel eSIM from a local carrier. |
| Global Service Provider's Travel eSIM | Check if the provider supports eSIM. | Purchase a travel eSIM from a global service provider. |
After deciding on your connection method, open the official Apple support page to find options for international roaming, purchasing a travel eSIM from a local carrier or global service provider, and returning home. Select the necessary option and read the guidance for your situation.
If you plan to use international roaming with your existing carrier, confirm before traveling that your current plan includes international roaming without additional charges. Some plans offer travel passes or plans that can be purchased in advance for use at your destination. Roaming via eSIM operates similarly to roaming with a physical SIM. Specific usage conditions should be verified with your carrier.
Travel eSIMs can be purchased from local carriers or global service providers. To use a different carrier, your iPhone must be unlocked. Follow these steps to check the lock status:
Checking Lock Status Before Using Another Carrier's eSIM
To use a local carrier or another service provider's eSIM abroad, your iPhone must not be locked to a specific carrier. You can check the lock status through the following steps:
- Open the 'Settings' app on your iPhone.
- Tap 'General.'
- Tap 'About.'
- Check the 'Carrier Lock' section.
- If it says 'No SIM restrictions,' your iPhone is unlocked.
Activating Travel eSIM at Your Destination
If you purchased a travel eSIM before your trip and see a 'Turn on Travel eSIM' notification after arriving at your destination, follow the notification to set up the line. In iOS 26 and later, you may be prompted to choose whether to use the travel eSIM in your home country or during your travels.
- Tap 'Turn on Travel eSIM.'
- Select 'Travel eSIM Only' or 'Travel SIM and Current eSIM.'
- If you choose to use both lines, the travel eSIM will be used for data.
- Tap 'Continue.'
- You will see options for 'Turn on Low Data Mode' or 'Not Now.' Choose one. This will activate the travel eSIM.
If you use both lines, the main line continues to function, but roaming charges may apply to the home eSIM. To select the data line directly, open the 'Settings' app, tap 'Cellular,' and then tap 'Cellular Data.' From there, select the line you want to use for data. Even if you only use the travel eSIM, FaceTime and iMessage can still be used on your existing home line.
Checking Main Line After Returning Home
When using a travel eSIM in iOS 26 and later, your iPhone may automatically turn off the travel eSIM and reactivate the home SIM upon your return, depending on the country or region. If you do not receive a notification that the travel eSIM has been turned off, check to see if the main line is active.
- Open the 'Settings' app.
- Tap 'Cellular.'
- Ensure 'Turn on this line' is activated next to the eSIM you wish to use as the default.
- Turn off any other travel eSIM lines you no longer need.
Exceptions for Mainland China, Hong Kong, and Macau
Models supported in mainland China must be distinguished from those in other countries or regions. Currently, Apple lists the iPhone 18 Pro, iPhone 18 Pro Max, iPhone Duo, iPhone 17e, and iPhone Air. In Hong Kong and Macau, some models support dual SIMs using two nano-SIM cards, so check the purchase region and model together.
Devices purchased outside of mainland China cannot use eSIM from mainland Chinese carriers. If you plan to use an eSIM-only iPhone model purchased in another country or region, verify whether it can be activated through a global carrier. Finally, confirm with your carrier whether your current cellular plan supports eSIM and the cellular band compatibility of the countries or regions you will visit.
📌 Editor's 3 Key Takeaways
- Before departure, check 'Settings > General > About' to confirm 'No SIM restrictions' for carrier lock.
- Pre-install the eSIM profile on domestic Wi-Fi before departure, and activate cellular upon local landing.
- Keep the main line active for receiving messages on your Korean number while blocking data roaming.
Using eSIM on iPhone While Traveling Abroad - Apple Support (KR)