How to Activate eSIM on iPhone 17, 16, 15 (2026 Step-by-Step Guide)
✅ Tested & Verified Models:
Setting up an eSIM for your international trip shouldn't be stressful. Whether you're heading to China to bypass the Great Firewall or exploring Europe, follow this 2026 step-by-step guide to ensure your data works the moment you land.
💡 Exclusive for China Travelers: Most local SIM cards block your favorite apps. Our China eSIM features a built-in VPN, allowing you to use Google, Gmail, TikTok, ChatGPT, Instagram and WhatsApp instantly without any extra setup or VPN apps.
Step 0: Is Your iPhone eSIM-Compatible?
Before you buy or install anything, confirm your device actually supports eSIM. Most iPhone XS and later models do — but there's one exception that trips up a lot of travelers:
⚠️ Important for iPhones purchased in Mainland China: Devices sold in Mainland China, Hong Kong, and Macau typically do not include eSIM hardware, even if the same model sold in Canada or the US does. If your iPhone was originally purchased in Mainland China, it most likely cannot use an eSIM at all — this is an Apple hardware restriction, not something we or any provider can unlock.
Quick check: Dial *#06# on your iPhone. If an EID number appears alongside your IMEI numbers, your device supports eSIM. No EID shown usually means no eSIM capability.
You'll also need your iPhone carrier-unlocked — if it's still locked to your home carrier, you may see an "eSIM not supported" error even on a compatible model.
Best Practice: Install Before Travel (Golden Rule)
Don't set up your eSIM too early! Most data plans start their "Day 1" countdown the moment you scan the QR code. We recommend installing it on the day of your departure at home using a reliable WiFi connection.
Visual Guide: How to Use eSIM on iPhone
(Refer to the 6 steps in the image below for a smooth setup)
Detailed Step-by-Step Breakdown
1. Prepare Your Connection
Make sure you are connected to WiFi or use cellular data from another SIM card.
2. Access Mobile Settings
Go to Settings > Cellular (or Mobile Service). Tap Add eSIM.
3. Scan & Label
Scan the QR code provided in your eSIMCan confirmation email. We recommend labeling the new line as "Travel" or "eSIMCan".
4. Activate Roaming (Crucial!)
Once you arrive at your destination, ensure Data Roaming is turned ON for the travel eSIM line, and check that Allow Mobile Data Switching is turned off so your phone doesn't quietly switch back to your home SIM.
Troubleshooting: Common Errors & Fixes
| Error / Symptom | Likely Cause | Fix |
|---|---|---|
| "This code is no longer valid" or "eSIM cannot be added" | In most cases, the eSIM actually installed successfully and this is a false alarm | Check Settings > Cellular — if a new line appears, you're already set. No need to rescan. |
| No EID appears when dialing *#06# | Device is a Mainland China / Hong Kong / Macau model without eSIM hardware | This model cannot use eSIM. A physical roaming SIM is required instead. |
| "eSIM not supported" during setup | Phone is carrier-locked | Contact your carrier to request an unlock before traveling. |
| Installed but no internet after landing | Data Roaming is off, or wrong line selected for Cellular Data | Go to Settings > Cellular > Cellular Data and confirm the travel eSIM is selected, with Data Roaming on. |
FAQ
Can I use an eSIM and my regular SIM at the same time?
Yes. iPhones support Dual SIM, so you can keep your home number active for calls/texts while using the travel eSIM for data.
Does my China Mainland iPhone support eSIM?
Generally, no. iPhones sold in Mainland China do not include eSIM hardware. Check with *#06# to confirm — if no EID appears, your device cannot use eSIM.
Do I need to turn off the VPN feature manually in China?
No manual setup needed on supported plans — the built-in VPN works automatically once your eSIM data plan is active. If a specific app misbehaves, restarting the app or toggling Airplane Mode usually resolves it.
How long does eSIM installation take?
Typically 5–10 minutes, though installation itself doesn't use any of your data — only activation (turning on the line + roaming) starts your plan.
What if I delete my eSIM by mistake?
Most travel eSIMs cannot be reinstalled once deleted from the device. Avoid deleting it to "fix" a connection issue — try toggling Data Roaming or restarting your phone first.
Why Choose eSIMCan?
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