Activating eSIM on an iPhone is simpler than it seems, but it has some critical points that, if not followed, can cause problems. This guide explains the complete process for all compatible iPhone models, with solutions for the most frequent errors.
What is eSIM on iPhone
eSIM (Embedded SIM) is a digital SIM card integrated into the iPhone's hardware. Unlike physical SIMs, it cannot be physically removed or changed — it is managed entirely from the device settings. It allows you to have multiple data or voice lines on the same iPhone without needing physical cards.
iPhone Models with eSIM
| Model | eSIM | Physical SIM slot | Dual SIM possible |
|---|---|---|---|
| iPhone XS, XS Max, XR | ✅ | 1 | ✅ (1 eSIM + 1 physical SIM) |
| iPhone 11 (all) | ✅ | 1 | ✅ |
| iPhone 12 (all) | ✅ | 1 | ✅ |
| iPhone 13 (all) | ✅ | 1 | ✅ |
| iPhone 14 (USA) | ✅ eSIM only | ❌ | ✅ 2 eSIMs |
| iPhone 14 (rest of world) | ✅ | 1 | ✅ |
| iPhone 15 (USA) | ✅ eSIM only | ❌ | ✅ 2 eSIMs |
| iPhone 15 (rest of world) | ✅ | 1 | ✅ |
| iPhone SE 3rd gen | ✅ | 1 | ✅ |
| iPhone 16 (all) | ✅ | 1 or eSIM only depending on region | ✅ |
Steps to activate eSIM on iPhone
Method 1: Scan the QR code (most common)
- Make sure you are connected to Wi-Fi (mandatory)
- Go to Settings → Cellular
- Tap "Add Data Plan" or "Add eSIM"
- Select "Use QR Code"
- Point the camera at the QR code from the PuraSIM email (do not take a screenshot first)
- Confirm activation on the following screens
- Assign a name to the line (e.g., "PuraSIM Travel") and select its purpose
Method 2: Manual activation code
- Settings → Cellular → Add Plan → "Enter Details Manually"
- Enter the SM-DP+ code (format:
LPA:1$smdp.ejemplo.com$CODE) - Follow the on-screen instructions
Frequent problems and solutions
| Error | Cause | Solution |
|---|---|---|
| "Add Data Plan" does not appear | iPhone locked or iOS outdated | Update iOS. If it persists, call your carrier to request eSIM unlock |
| QR cannot be scanned | Image quality, distance or reflection | Increase brightness, 20-30cm distance, avoid reflections |
| Error downloading profile | Unstable Wi-Fi or active VPN | Change Wi-Fi or temporarily deactivate VPN |
| eSIM no data after installation | Roaming deactivated or incorrect APN | Activate 'Data Roaming' for the eSIM line in Settings |
| 'Invalid activation code' | QR already used previously | Contact PuraSIM to regenerate the code |
Using eSIM with Dual SIM
With Dual SIM, you can have your Spanish SIM active and the PuraSIM eSIM at the same time:
- Primary line (Spanish SIM): for calls and SMS from your usual number
- Secondary line (travel eSIM): for data abroad at local prices
- Settings → Cellular → "Cellular Data" → select the travel eSIM
- Settings → Cellular → "Default Voice Line" → Spanish SIM
Conclusion
Activating eSIM on iPhone takes less than 10 minutes and only requires stable Wi-Fi and the provider's QR code. The main trick: do not scan the QR code twice and make sure to activate "Data Roaming" after installation for data to work abroad.
Frequently asked questions
Can I have more than 2 eSIMs installed on an iPhone?
Yes. An iPhone can store up to 8 eSIM profiles, although only 1 or 2 can be active simultaneously depending on the model.
Does eSIM work if I don't have an internet connection when I arrive in the country?
Yes, once installed and activated, eSIM works without additional internet. It uses the destination country's mobile network directly.
Can I transfer the eSIM to another iPhone if I change phones?
Yes, from iPhone 13+ you can transfer eSIMs directly between iPhones or request a new QR from the provider.
Does eSIM get deleted if I do a factory reset?
Yes. When you do a factory reset, all eSIM profiles are deleted. You will need to reinstall them with new QR codes or ask the provider to regenerate the codes.
Does the dual SIM iPhone use more battery?
Minimally. Having two active lines increases consumption by between 3% and 7%, a negligible difference in daily use.
