iPhone 18 Pro Series

The iPhone 18 Pro and iPhone 18 Pro Max, launched September 2026, both support eSIM and Dual eSIM. Whether your device also has a physical SIM tray now depends more than ever on the exact market it was sold in.

Key Takeaways

• Both iPhone 18 Pro models support eSIM and Dual eSIM.
• eSIM-only in the US, Canada, Japan, Mexico, and several other markets, with no physical SIM tray.
• A nano-SIM tray is retained in the EU, UK, Australia, and other regions.
• China gets its own configuration: dual nano-SIM, mixed, or dual eSIM.
• Carrier unlock is required to use Roamix or any non-carrier eSIM.

Does the iPhone 18 Pro Support eSIM?

Yes. Every iPhone 18 Pro and iPhone 18 Pro Max supports eSIM, with Dual eSIM letting you keep two lines active at the same time. The bigger question for most buyers isn't whether eSIM works, it's whether your specific unit still has a SIM tray.

Which Countries Get the eSIM-Only iPhone 18 Pro?

Apple confirmed the iPhone 18 Pro and Pro Max ship with no physical SIM tray at all in these markets:

• United States and U.S. Virgin Islands
• Canada
• Mexico
• Japan
• Guam
• Bahrain, Kuwait, Oman, Qatar, Saudi Arabia, United Arab Emirates

Models sold in the EU, UK, Australia, New Zealand, Singapore, South Korea, and most other regions keep a nano-SIM slot alongside eSIM, so you can run one physical SIM and one eSIM together.

Mainland China is its own case: the iPhone 18 Pro there supports two nano-SIM cards, one nano-SIM plus one eSIM, or two eSIMs, a more flexible setup than any other market gets.

If you're not sure which configuration your unit has, check Settings → General → About → SIM. No SIM entry listed there means your device is eSIM-only.

iPhone 18 Pro Models and eSIM Compatibility

How to Activate eSIM on iPhone 18 Pro

1. Open Settings.
2. Tap Cellular, then tap Add Cellular Plan.
3. Scan the QR code from your eSIM provider. Roamix emails the QR code within 60 seconds of payment.
4. Give the line a label (e.g., "Roamix Travel").
5. Set the Roamix line as your cellular data line when prompted.
6. Leave your home carrier active for calls and texts.

Using Two Lines on iPhone 18 Pro

iPhone 18 Pro supports Dual eSIM, two active lines at the same time, regardless of whether your unit also has a physical SIM tray. For international travel, the most common setup is:

• Home carrier line: Handles calls, iMessage, and banking SMS codes. Data roaming turned off.
• Roamix eSIM: Set as the cellular data line. Data roaming turned on (required for travel eSIMs that use partner networks).

Navigate to Settings → Cellular → Cellular Data to assign which line handles data. Configure each line's roaming individually by tapping the line name.

iPhone 18 Pro eSIM for International Travel

A Roamix eSIM lets your iPhone 18 Pro connect to local partner networks in 190+ countries without paying your carrier's international day pass rates. Purchase before departure, scan the QR code over Wi-Fi, and your phone is ready to connect the moment you land, with no swapping a tray-mounted SIM required, even on models that have one.

Top up directly from your Roamix dashboard if you need more data mid-trip.

Unlock check: Go to Settings → General → About → Carrier Lock. If it says anything other than "No SIM restrictions," your iPhone is carrier-locked and needs to be unlocked before a third-party eSIM will work.

iPhone 18 Pro eSIM Troubleshooting

"eSIM not working" after installation: Confirm the Roamix line is selected at Settings → Cellular → Cellular Data. Verify Data Roaming is on for the Roamix line. Toggle Airplane Mode on for 15 seconds then off.

Can't scan the QR code: Hold the camera 6–8 inches from the code in good light. Alternatively tap Enter Details Manually and use the SM-DP+ address from your confirmation email.

"eSIM not compatible" error: Almost always caused by a carrier lock, not a hardware limitation. Check Carrier Lock status in Settings and contact your carrier to unlock.

Bought your iPhone 18 Pro abroad?: A unit purchased in an eSIM-only market (like the US) has no SIM tray no matter where you use it afterward. A unit purchased in a market with a tray (like the EU or UK) keeps that tray everywhere. The hardware configuration is fixed at the point of sale, not the country you're currently in.