How to Set Up eSIM on iPhone for Japan Travel
Before You Start
Make sure your iPhone supports eSIM:
- iPhone XS, XR, or newer
- Running iOS 16 or later (recommended)
- Not carrier-locked (contact your carrier if unsure)
You'll also need a WiFi connection to download the eSIM profile.
Step-by-Step Setup
Step 1: Purchase an eSIM Plan
Choose a Japan eSIM plan from a provider like Airalo, Ubigi, or Saily. After purchase, you'll receive a QR code — either via email or in the provider's app.
Step 2: Open iPhone Settings
Go to Settings > Cellular (or Mobile Data in some regions).
Step 3: Add eSIM
Tap Add eSIM or Add Cellular Plan.
Choose Use QR Code and scan the QR code from your provider.
Step 4: Label Your Plan
iPhone will ask you to label the plan. We recommend naming it something clear like "Japan eSIM" to distinguish it from your regular plan.
Step 5: Set Data Line
When prompted, set the Japan eSIM as your default data line — or wait until you arrive in Japan to switch.
Step 6: Enable Data Roaming
Go to Settings > Cellular > [Your Japan eSIM] and enable Data Roaming. This is required for most travel eSIM plans.
Step 7: Arrive in Japan
When you land, make sure your Japan eSIM is selected for mobile data. Your phone should automatically connect to a Japanese network.
Troubleshooting
eSIM not connecting?
1. Toggle Airplane Mode on/off
2. Restart your iPhone
3. Check that Data Roaming is enabled for the eSIM line
4. Try manually selecting a network: Settings > Cellular > [eSIM] > Network Selection > Manual
QR code not scanning?
- Make sure you have a stable WiFi connection
- Try entering the activation details manually (SM-DP+ address and activation code from your provider)
- Your iPhone may be carrier-locked. Contact your carrier to unlock it
- Some eSIM plans can only be installed once. Contact the provider if you've already scanned the QR code
Pro Tips
- Install 1-2 days before your trip — This way you can troubleshoot at home if anything goes wrong
- Don't delete the eSIM after your trip if you plan to visit Japan again — some providers allow you to reuse or top up existing plans
- Take a screenshot of your QR code as backup before scanning
Related Guides
- eSIM Not Working? Troubleshooting — Fix common issues
- Set Up eSIM on Android — Samsung, Pixel, and other Android phones
- What Is an eSIM? — How eSIM works and why it's great for travel
- Best eSIM for First-Time Visitors — Which plan to choose
- Compare Japan eSIM Plans →