This guide is for iOS 26 and later. If you're not sure which version you have, check **Settings → General → About → Software Version** — on an earlier version, see [Install on earlier iOS versions](/hc/help/articles/en-install-esim-iphone-old).

> 📝 **Note:** Your eSIM will not be named "SimSIM" on your device — it appears under a local network's name at your destination, which is normal. The eSIM you just installed always appears at the bottom of the line list. [More details](/hc/help/articles/en-activating-your-esim).

## iOS 26 and later

**1. Open My eSIMs in the app**

In the SimSIM app, go to **My eSIMs** and open the plan you purchased. A plan that hasn't been installed yet is marked as ready to install. If you bought several plans, make sure you pick the one for your current destination.

**2. Tap the install button**

Tap **Install eSIM**. The app passes the profile straight to iOS — there's no QR code to scan and no codes to enter manually.

**3. Approve adding the eSIM**

Your iPhone will ask permission to add a new eSIM. Approve it and wait for installation to finish. This takes a few minutes, and you can keep using your phone meanwhile.

**4. Choose "Data Only"**

When asked what the line is for, choose **Data Only**. The new line then handles internet only, while your calls and messages continue through your regular number.

**5. Finish the installation**

Tap **Done**. The eSIM is now installed on your device.

**6. Turn on the new line**

Select the newly configured eSIM and turn the line on. Until you do, the line exists on the device but is inactive.

> 💡 **Tip:** The eSIM you just installed always appears at the bottom of the line list.

**7. Confirm data roaming is enabled**

Go back to the previous screen, tap the eSIM you just enabled, and confirm **Data Roaming** is on. This is the step most people miss — without it the eSIM is installed but you'll have no internet at your destination.

**8. After you land — switch your data line**

Once you arrive, go to **Settings → Cellular → Cellular Data** and select the eSIM you set up. From this point your browsing runs through the plan you purchased.

## If something isn't working

The most common problem by far is **data roaming** being switched off on the new line. If you have no internet at your destination, check that first.

For more checks see [Troubleshooting](/hc/help/articles/en-troubleshooting), confirm your model is on the [compatible device list](https://simsimglobal.com/esim-compatible-devices), or see [installing on Android](/hc/help/articles/en-install-esim-android) if you're setting up a different device.