Complete iPhone eSIM Setup Tutorial
eSIM (embedded SIM) is a revolutionary technology that allows you to use different carrier services without changing physical SIM cards. This tutorial will guide you step by step on how to set up eSIM on your iPhone, so you can be prepared before traveling abroad.
Prerequisites
Before starting, make sure your device meets the following requirements:
- iPhone XS / XR or newer (eSIM supported)
- iOS 12.1 or newer
- Purchased eSIM plan and received QR code
- Stable Wi-Fi network connection
📱 How to Check if Your Phone Supports eSIM?
Enter *#06# in the dialer. If an EID number is displayed, your phone supports eSIM.
Step 1: Add eSIM
- Open the Settings app
- Tap Cellular or Mobile Data
- Tap Add Cellular Plan
- Select Use QR Code
- Scan the QR code you received after purchasing the plan
💡 Tip
If you can't scan the QR code, you can choose 'Enter Details Manually' and enter the activation information provided by the carrier.
Step 2: Set Label
After adding eSIM, the system will ask you to set a label for this number, for example:
- 'Travel' - for use during travel
- 'Japan' - mark the usage region
- 'Secondary' - distinguish primary and secondary numbers
Choose an easily recognizable label to make it convenient to switch between multiple numbers.
Step 3: Configure Default Number
If you have multiple numbers (e.g., original SIM card + eSIM), you need to set:
- Default Voice Line: For making calls (recommended to set as original number)
- Default Data Line: For internet access (recommended to set as eSIM)
- iMessage and FaceTime: Choose the number you want to use
✅ Recommended Configuration
Use original number for calls (receive verification codes), use eSIM for data (enjoy local data), so you can stay connected while saving costs.
Step 4: Enable Data Roaming
After arriving at your destination:
- Go to Settings → Cellular
- Select your eSIM line
- Turn on the Data Roaming switch
- Confirm successful network connection (carrier name displayed)
FAQ
Q: Can eSIM be deleted and reinstalled?
A: Most eSIMs can only be installed once and cannot be reinstalled after deletion. It's recommended not to delete them casually.
Q: Why does it show 'No Service'?
A: Please check: 1) Whether you've reached the plan coverage area 2) Whether data roaming is enabled 3) Whether the plan has been activated.
Q: Can I use two numbers at the same time?
A: Yes. You can use your original number for calls and SMS, while using eSIM for internet access.
Troubleshooting
If you encounter problems, you can try the following methods:
- Restart your phone
- Turn off and on airplane mode
- Check for carrier settings updates
- Contact eSIM provider customer service
Ready to use eSIM?
Now that you've mastered the eSIM setup method, it's time to choose a plan that suits your travel destination.
View Plans