---
title: "iPhone - How to Activate eSIM Mobile Data"
description: "If you installed your eSIM before your trip and have now arrived at your destination, it's time to activate your eSIM mobile data."
url: https://help.wonderconnect.com/en/articles/14-iphone-how-to-activate-esim-mobile-data
collection: "Mobile Data Activation"
updated: 2026-08-18
language: en
alternates: [pl]
---

# iPhone - How to Activate eSIM Mobile Data

If you installed your eSIM before your trip and have now arrived at your destination, it's time to activate your eSIM mobile data.

> **Info:** We created these instructions based on iPhone 13, iOS 18.4.1

> **Success:** Your data plan starts when your eSIM first connects to a supported network. For most plans, this happens when you enable data roaming at your destination.

### Turn On Your eSIM

1.  Open Settings:
    
    -   Tap **Mobile Service**. (This section may be called "Cellular" on some iPhones.)
        
    
    ![](https://staticfiles.gleap.io/ghelparticle/knGLZB0UWz2Wxj92nTokG675FLvqM41IK0hGDidxh4z9WOdJcUJ5Q39swZgDZYeTEz7mKjCr1My.png)
    
    ![](https://staticfiles.gleap.io/ghelparticle/u2bRU8ZikXXfRZg3rhvLQFP4lDNdxR97426UNeHsQy2ssaYdZi9dqpICelaRFqS4hbVhEdTKEyQ.png)
    
2.  Scroll to the SIMs section and find your travel eSIM.
    
    **If the eSIM line is ON**:
    
    -   Continue to Step 3
        
    
    **If the line is OFF:**
    
    -   Tap the eSIM.
        
    -   **Tap the toggle next to the "Turn On This Line"**.
        
    -   **Go back** to Mobile Service settings.
        
    
    ![](https://staticfiles.gleap.io/ghelparticle/swk1wV57zWdI3VebqHgBXWdYQ276wwhg1jboFtWXLZch4KxATbggJmdU03Ate0jkChHu3zirjqN.png)
    
    ![](https://staticfiles.gleap.io/ghelparticle/93gCCl0F95XIqTSnp3O7307ec1MxflgMWsCGtUvZrMwZu3ar14Y1wu18Yra9z0WW9lku1LzHRqp.png)
    
    ![](https://staticfiles.gleap.io/ghelparticle/b4U96QcHM5ceSouySN2lzmrLiGYWC0cyL31lpkqKzoziiOFOyGVTW1my8fEpOZFvrB5cQsiyTcH.png)
    

### Select eSIM for Mobile Data

3.  Tap Mobile Data:
    
    -   **Select Travel eSIM**.
        
    -   **Turn off** "Allow Mobile Data Switching".
        
    -   Tap **< Back** to return.
        
    
    ![](https://staticfiles.gleap.io/ghelparticle/v9Eqwb4G31xTw94lkgL5clYZumUdLZgukOiMBqeyDrZ6MM4pQUNFKijEbZ2agE2Lpw1Q2fNB892.png)
    
    ![](https://staticfiles.gleap.io/ghelparticle/bjBm9QiL2eojE9ytZ5ntpTozXtDrmnlhQ9h9WiCmPgGmU419BAcqyJEzGocykj5dIJiqlpJatP9.png)
    
    ![](https://staticfiles.gleap.io/ghelparticle/VcDA1dgbiCEh3qByPBgOYjwcJgKYPgpnMgZ0z1CF67joDWjQqUQuR1wKYIY7NmLGrGTH5d4OsEi.png)
    

### Turn On Data Roaming

4.  In Mobile Service settings:
    
    -   Tap your **Travel eSIM**.
        
    -   **Turn on Data Roaming**.
        
    -   **Return** to Mobile Service.
        
    
    ![](https://staticfiles.gleap.io/ghelparticle/0XK7tWTEANynfPpwZTpYIZhuKg9V78HYhG6RuhUdynU3rQXjIpeE1KyyBI7UHEu8XMgYXGMqGBu.png)
    
    ![](https://staticfiles.gleap.io/ghelparticle/aF5wUFtJhbKEhYE0PtqsTKgmOI5AHQPmXqiVspvRenzKHU1Wfm3MqDOIVHAPIw00I6Fzl5EIGGd.png)
    
    ![](https://staticfiles.gleap.io/ghelparticle/87nWJqsVzxro21LJLUsYJoYqxGYFyqZp3XtrRvg0fNPNtahUIqHI3OcX5942gPXBS8y3m5o8uF4.png)
    

### Turn Off Roaming for Your Primary Number

5.  Find your Primary number (shown with your phone number beneath its label):
    
    -   Tap your Primary line.
        
    -   **Turn off Data Roaming**.
        
    
    ![](https://staticfiles.gleap.io/ghelparticle/OJn04uMOiexfzSbf0UmcebxsxM1EqRBycfl918SkbQByt5gKfYtSgJMX2vqm4b91HnhiK5th4Pa.png)
    
    ![](https://staticfiles.gleap.io/ghelparticle/v1pMnNF6sQbKLvvP02UslarmSiIQt3LizFkWzt8DFSr1wO0ZKf9X0DwBk98vdUk1MBk4oaDkPcz.png)
    
    > **Warning:** Your home carrier may charge you for incoming calls or messages even when data roaming is off. We are not responsible for these charges.
    

### Test the Connection

6.  Turn off Wi-Fi and browse the internet. As you use data for the first time, we will send you an SMS confirmation of successful activation.
    
    🎉 **Your eSIM is now active!**
    
    > **Info:** If you use the WonderConnect mobile app, the data usage bar will update within 10 minutes of your first data use.