How Do You Install an eSIM on iPhone?

You install an eSIM on an iPhone by opening Settings, choosing Add eSIM and scanning the QR code supplied by your provider. You then label the new line, select it for mobile data and, for many travel eSIMs, enable data roaming. The process usually takes a few minutes, although the menu wording can vary by iPhone, region and software version.

Do not delete your existing SIM or eSIM before starting. A travel eSIM normally sits alongside your usual line, letting you keep your regular number while using the new line for data.

What should you check before installing an eSIM?

You need an eSIM-compatible, network-unlocked iPhone, an internet connection and the installation details from your eSIM provider.

Check these points before you begin:

• Device support: Look up your exact iPhone model and its country of purchase on Apple’s current eSIM support pages. Some regional variants differ, even when the model name looks familiar.
• Network lock: Go to Settings > General > About and find Carrier Lock or the equivalent field. If the phone is locked, ask the network that supplied it what your options are.
• Internet access: Connect to reliable Wi-Fi while installing. The QR code tells the phone which eSIM profile to download, so scanning it without internet access may get you nowhere.
• Installation details: Have the QR code open on another device or printed on paper. If your provider supplied an activation code or manual address, keep those nearby too.
• Provider instructions: Check when the provider recommends installation and when the plan begins. Activation rules vary, so installing weeks early without reading the instructions is an avoidable gamble.
• Available eSIM space: An iPhone may store several profiles, but the number that can remain active depends on the model. Remove an old profile only when you are certain it is no longer needed.

Charge the phone before starting. An airport wall socket is a poor place to discover that you are on the final sliver of battery and the QR code is buried in your email.

How do you install the eSIM with a QR code?

You add the eSIM from the iPhone’s mobile network settings and scan the provider’s QR code when prompted.

1. Connect the iPhone to Wi-Fi. Keep the connection active throughout setup.
2. Open Settings. Tap Cellular, Mobile Data or Mobile Service, depending on the language and software used by your phone.
3. Tap Add eSIM. On some versions, you may first need to choose Add Cellular Plan or Add Mobile Plan.
4. Choose Use QR Code. The camera scanner should appear.
5. Scan the QR code. Display it on a laptop, tablet or another phone, then hold your iPhone so the entire code sits inside the frame. Avoid glare and turn up the other screen’s brightness if the camera struggles.
6. Confirm the new plan. Tap Continue, Add Cellular Plan or the equivalent prompt. The phone will contact the provider and download the profile.
7. Wait for installation to finish. Do not close Settings or restart the phone while it is adding the eSIM.
8. Follow any extra provider prompts. Some eSIMs need an activation code, confirmation code or APN setting. Enter only the information supplied by the provider.

If the QR code is saved on the same iPhone, newer software may let you press and hold the code in Photos, Mail or a browser and choose an option to add the eSIM. If that option does not appear, move the code to another screen or use manual installation details.

To install manually, return to Add eSIM > Use QR Code and look for Enter Details Manually. Copy the SM-DP+ address, activation code and any confirmation code exactly. A stray space is enough to make the attempt fail, which is impressively petty even by phone-setting standards.

How should you label the eSIM and choose your data line?

Give the eSIM a clear label and select it as the mobile data line, while leaving your usual number as the default for calls if that suits your trip.

After installation, the iPhone normally asks you to label each line. Choose something unmistakable such as Travel Data, Holiday eSIM or the destination name. Avoid leaving both lines labelled Secondary; that becomes unnecessarily confusing when you are tired and trying to call a hotel.

The setup screens may also ask you to choose:

• Default voice line: Your usual SIM is often the sensible choice if you want to keep making and receiving calls on your regular number. Check possible roaming charges with that network separately.
• iMessage and FaceTime line: Keeping your regular number selected can help preserve existing conversations. Apple services may briefly verify the number when SIM settings change.
• Mobile data line: Select the new eSIM if it is intended to provide travel data.
• Mobile Data Switching: Consider leaving this off. When enabled, the iPhone may use data from the other line if it thinks the connection would be better, which can lead to unintended roaming on your home SIM.

You can change all of these later under Settings > Cellular or Mobile Data. Tap each line to confirm that the labels match the SIMs you think they do.

Should you enable data roaming on a travel eSIM?

Data roaming often needs to be enabled on a travel eSIM because it may connect through a partner network, but you should follow the provider’s instructions.

Open Settings > Cellular, tap the travel eSIM and switch on Data Roaming if directed. Then check that Turn On This Line is enabled. Data roaming is a setting for each line, not one universal switch, so make sure you are editing the travel eSIM rather than your normal SIM.

To reduce the chance of your home line using data abroad:

• Open your regular SIM under Cellular and turn off Data Roaming.
• Confirm that Cellular Data points to the travel eSIM.
• Disable Mobile Data Switching unless you deliberately want both lines involved.
• Leave automatic network selection enabled unless the provider tells you to choose a specific network.

Do not change the APN merely because you have found the menu. Most eSIMs configure it automatically. If manual settings are required, copy them directly from the provider rather than borrowing values from a forum post about a different service.

How do you test whether the eSIM is working?

Test the eSIM by confirming that it is active, selecting it for mobile data and loading a webpage with Wi-Fi switched off.

At your destination, follow this sequence:

1. Open Settings > Cellular and check that the travel eSIM is turned on.
2. Confirm that it is selected under Cellular Data or Mobile Data.
3. Check data roaming against the provider’s instructions.
4. Turn off Wi-Fi temporarily.
5. Switch Airplane Mode on for several seconds, then off again, or restart the iPhone.
6. Wait for the phone to register on an available network.
7. Open a fresh webpage or send a message that needs mobile data.

A signal indicator alone does not prove that data is working. Equally, failure to connect before departure may simply mean the eSIM only has access to supported networks at the destination. Check the provider’s activation guidance before repeatedly changing settings.

Once the test succeeds, turn Wi-Fi back on if you want it. You can also look under Settings > Cellular to see which line is recording data use.

Why is the iPhone eSIM not installing or connecting?

Most eSIM errors come from device restrictions, a previously used QR code, missing internet access or the wrong line settings.

Try the fix that matches what you see:

• Add eSIM is missing: Confirm the exact model supports eSIM, update the phone if appropriate and check for carrier or workplace management restrictions. Regional device variants can matter.
• The QR code will not scan: Clean the camera lens, increase the brightness of the screen displaying the code and make sure the whole square is visible. Use manual details if supplied.
• The code is invalid or already used: Many QR codes can install a profile only once. Check whether the eSIM already appears under Cellular before asking the provider for help.
• Unable to activate eSIM: Reconnect to Wi-Fi, restart the phone and try again without using a VPN. Also check Apple’s system status and the provider’s support information.
• The eSIM is installed but shows no service: Make sure you are at the intended destination, the line is enabled and network selection is automatic. If the provider names a particular partner network, try selecting that network manually.
• There is signal but no internet: Recheck the mobile data line, roaming switch and any provider-supplied APN. Toggle Airplane Mode before testing again with Wi-Fi off.
• Calls or messages use the wrong line: Open the contact or conversation and inspect its preferred line. The iPhone may remember the last SIM used for each contact.

Do not delete the eSIM as a first troubleshooting step. Some profiles cannot be reinstalled from the same QR code, so removal can turn a settings problem into a support conversation.

Which screenshots would make the setup easier to follow?

The most useful screenshots show the decision points in Settings without exposing QR codes, phone numbers or activation credentials.

For a visual version of this guide, include annotated screenshots of:

• The Settings > Cellular screen with Add eSIM highlighted.
• The Use QR Code option.
• The camera frame used to scan a QR code, using a dummy code rather than a real one.
• The Cellular Plan Labels screen.
• The screen for choosing the default voice and mobile data lines.
• The travel eSIM settings with Turn On This Line and Data Roaming highlighted.
• The main Cellular screen showing which eSIM is selected for mobile data.

Crop out the status bar where practical and blur phone numbers, EIDs, ICCIDs, email addresses and provider credentials. Never publish a working eSIM QR code: someone else may be able to scan it before its owner does.