How to install an eSIM on iPhone
Install the profile only after checking device compatibility and the plan activation conditions. Keep the iPhone on Wi‑Fi and retain access to the installation details in your account.
Short answer
Open Settings → Cellular/Mobile Data → Add eSIM, scan the QR code or enter the manual details, label the line and select it for Cellular Data. Enable Data Roaming only on the travel line when the plan instructions require it.
Steps
Prepare the phone
Connect to Wi‑Fi, update iOS when appropriate, confirm that the iPhone is unlocked and keep the QR code or manual installation details accessible.
Open the eSIM menu
Go to Settings → Cellular or Mobile Data and tap Add eSIM. Labels can differ slightly with device language.
Add the profile
Choose Use QR Code and scan the code from another screen. If the QR is on the same iPhone and the system does not offer an option to read it from a photo, use the manual installation details or display it on another device.
Confirm and label the line
Wait for the profile to download, then give it a clear label such as “Travel”. Do not delete it if service does not appear immediately.
Choose your lines
Keep the primary number for calls and texts if needed, and select the travel eSIM for Cellular Data. Turn off Cellular Data Switching if you do not want the phone to fall back to primary-line data.
Activate at the right time
At the destination, turn on the line and Data Roaming only as described in the plan instructions. Allow a few minutes for network registration and verify that data is using the eSIM.
Before scanning the QR code
Check whether validity starts at installation or at the first supported network connection. If it starts on installation, do not add it too early. Keep the QR code private because it is an installation credential.
A QR code can often be used only once. If installation is interrupted, do not delete and reinstall without first checking with support.
Settings that prevent unintended roaming
Set the eSIM as the Cellular Data line. Disable Data Roaming on the primary line and, when you do not need it, primary-line cellular data. You may keep it enabled for important SMS, but your primary carrier can charge for calls or texts.
Do not change your number in WhatsApp simply because you changed the data line. WhatsApp stays on the existing account unless you intentionally use Change Number.
If it does not connect after arrival
Confirm that the line is on, selected for Cellular Data and using Data Roaming as instructed. Toggle Airplane Mode briefly and restart the phone if necessary.
Enter an APN only when one is supplied in the instructions. Do not invent an APN or delete the eSIM; save the error message and ask support for help.
Frequently asked questions
Can I scan a QR code from the same iPhone?
It depends on the iOS version and how the code was provided. If no safe photo option appears, use the manual details or display the code on another screen.
Does the eSIM need to be my default voice line?
No. For a data-only plan, select it for Cellular Data; your primary line can remain the default for your number.