Change eSIM iPhone 2026: without losing data or settings

Changing eSIM on iPhone requires no deletion: open Settings > Cellular, choose which eSIM to use for data, and deactivate the previous one. Your primary eSIM and your number stay intact. At eSIM Ahora we see this daily with travelers adding a local plan without touching their home line.

How to change eSIM on iPhone step by step

The process depends on what you want to do. Three distinct cases exist, and it pays not to mix them: switching which eSIM your iPhone uses for data, installing a new eSIM alongside the one you already have, or moving an eSIM to another phone. Most "I lost my settings" problems come from confusing the first with the last.

To switch the active eSIM, follow these steps:

1. Open Settings and go to Cellular (in some versions it appears as Mobile Data).
2. In the SIMs section you'll see all your lines: the physical one if you have it, and each eSIM with its label.
3. Tap the eSIM you want to use for data.
4. Turn on Activate this Line if it was off.
5. Go back to the previous screen, tap Mobile Data, and select that line.

In less than a minute your iPhone browses with the new eSIM. No profiles are deleted: the previous eSIM stays installed and off, ready to reactivate when you return.

If what you need is to install a new eSIM, go to Settings > Cellular > Add eSIM and scan your provider's QR code. You can also install it from an activation link or by entering the details manually. If something fails at this point, check our guide to fix an eSIM that won't connect, where we cover the most common reasons.

Label your lines

Before installing the second or third eSIM, give them clear labels. Go into each line and tap Line Label: "Primary", "Travel", "Work". Apple offers some predefined labels and you can also write your own. It seems like a minor detail, but with three profiles installed it's the difference between turning off the right line or being left without data at the airport.

Change your data line without losing your number

The most common question is whether activating a travel eSIM makes you lose your usual number. It doesn't. An iPhone with dual lines can have one eSIM for data and another for calls and SMS at the same time. Your regular number keeps receiving messages and calls, as long as that line is on and has coverage.

The typical setup for a trip is this:

• Default Line: your home number, for calls and SMS.
• Mobile Data: your travel eSIM.
• Data Roaming: turned on only for the travel eSIM and off for your home line.

That last point is what protects your account. Go into your home line, turn off Data Roaming, and you'll avoid charges if your iPhone decides to switch to it on its own. When you use a prepaid data eSIM, data roaming on that line should be on, because the local network treats it as a visitor.

The switch that changes lines automatically

In Mobile Data there's an option called Allow Cellular Data Switching. If it's on, your iPhone can use your other line for data when the current one has weak signal. On a trip you should turn it off: if your home line kicks in without you noticing, you could rack up expensive roaming. Turn it off and keep control of which line uses data.

If you use WhatsApp with your regular number while browsing on another eSIM, you don't need to change anything in the app. We explain it in detail in how to keep your WhatsApp with your original number using a travel eSIM.

What happens to iMessage and FaceTime

Each time you switch lines, iOS may ask which number to use for iMessage and FaceTime. Pick the one linked to your Apple ID. If you see the message "waiting for activation", it usually resolves with a stable data connection and a few minutes of waiting. More context in whether iMessage works with international eSIM.

How to move your eSIM to another iPhone

Here you do need to be careful. An eSIM is tied to the device where it's installed, and many travel providers generate a single-use QR code. If you delete the eSIM from your old iPhone without transferring it, that QR can't always be reused.

With iOS 16 or later, Apple lets you transfer an eSIM between iPhones without asking for a new code from the carrier, as long as the carrier supports that feature. The basic flow is this:

1. On your new iPhone, go to Settings > Cellular > Add eSIM.
2. Choose Transfer from Nearby iPhone.
3. Your old iPhone will show an alert with a confirmation code; enter it.
4. Select the line you want to move and wait for activation to complete.

Both phones must be close, with Bluetooth and Wi-Fi on, and with a recent iOS version. Once transferred, the line stops working on the old iPhone. That's normal: an active eSIM lives on only one device at a time.

Not all travel plans support transfer. If yours doesn't, check before deleting anything whether your provider can issue a new QR. With eSIM Ahora eSIMs, email or Telegram us before removing the profile and we'll review it with you. We respond in under 4 hours.

If your iPhone only has eSIM

iPhones 14, 15, and 16 sold in the United States have no physical SIM slot. There eSIM is the only option, and switching plans depends entirely on the steps above. If you have one of those models, read what to do when traveling with a US-only eSIM iPhone.

What you lose (and what you don't) when deleting an eSIM

There's a huge difference between deactivating a line and deleting it. Deactivating only turns off the service and you can turn it back on anytime. Deleting erases the profile from your iPhone.

When you deactivate an eSIM:

• The profile stays installed and the plan's remaining data doesn't change.
• You can turn it back on from Settings > Cellular.
• Your label and roaming settings are preserved.

When you delete an eSIM:

• The profile disappears from your iPhone.
• If the QR was single-use, you probably can't reinstall it without asking for a new one from the provider.
• You lose the settings linked to that line.

The practical rule is simple: if the trip ended and the plan already expired, delete the eSIM to keep your list clean. If it still has data or validity, just deactivate it. There's no cost to having an eSIM installed but off.

Backups and restoration

iCloud or Mac backups don't restore a travel eSIM on a new iPhone. When you restore, line settings may return, but the eSIM profile itself usually doesn't. That's why direct transfer between iPhones is the reliable method. Before switching phones, make a list of the eSIMs you still need and transfer only those.

eSIM Ahora versus other providers when changing plans

Changing eSIM on iPhone is managed by iOS, not the provider. The Settings steps are the same with eSIM Ahora as with Airalo or Holafly. What changes is what happens around it: how you get the QR, whether you can reinstall it, and how they treat you if something fails.

If you're after instant chat any time of day, Holafly has that edge over us. If you prefer support that keeps written history and plans with clear price ranges, that's what we offer at eSIM Ahora.

Whichever provider you pick, before buying check that your iPhone is eSIM-compatible and that it's unlocked. If the device is locked by a carrier, the travel eSIM won't activate even if you do everything right.

Common mistakes when changing eSIM on iPhone

Most failures repeat. Check this list before contacting support:

• The new eSIM appears but there's no data. Verify the line is activated, that it's selected in Mobile Data, and that data roaming is on for that line.
• The iPhone keeps using your home line. Turn off Allow Cellular Data Switching and verify which line is selected for data.
• The message "Could not activate eSIM". Connect to stable Wi-Fi, restart your iPhone, and try installing again. If the QR was already used, you'll need a new one.
• No network after landing. Turn airplane mode off and on, or restart. If the network doesn't appear, see what to do when the eSIM doesn't detect the carrier.

Another common mistake is installing the travel eSIM right after landing. It's more relaxing to install it at home with Wi-Fi and leave it off until you reach your destination. Then you just need to activate it and select it for data when you get off the plane.

Before your next trip

If you're going to swap plans by destination, have the profile ready in advance. For Latin America, check the plans for Mexico or Argentina. If you cross the Atlantic, we have options for Spain and United States. Each page shows current prices, which change every few months, so we only give ranges here.

Share data with another device

Once you've switched eSIM, you can share its connection with your laptop or tablet. The personal hotspot feature uses whichever data line is active at that moment. If needed, review how to share data from your eSIM to avoid surprises with usage.

Summary: how not to lose anything when changing eSIM

Three ideas suffice. First, switch lines, don't delete: deactivating is reversible and deleting isn't always. Second, set up data and roaming per line: that way your home number stays available without unexpected charges. Third, transfer before switching iPhones: it's the only reliable way to take an eSIM to another phone.

If you want to try eSIM Ahora, check our travel eSIM plans and pick your destination. You install the profile with Wi-Fi before leaving and activate it when you arrive.

FAQ

Can I have two eSIMs active at the same time on an iPhone?

Depends on the model. iPhone 13 and later support two active lines at once, and those lines can be two eSIMs or one eSIM and one physical SIM. Earlier models with eSIM only keep one line active. You can have multiple eSIMs installed, but only the ones that are on get used.

Do I lose my number when changing eSIM on iPhone?

No. Switching your data line doesn't affect your regular number. As long as that line stays on and has coverage, it keeps receiving calls and SMS. The profile is only lost if you delete it from Settings, and then the carrier would have to issue a new eSIM.

How do I transfer an eSIM from one iPhone to another?

With iOS 16 or later, go to Settings > Cellular > Add eSIM on your new iPhone and choose to transfer from a nearby iPhone. Confirm with the code that appears on your old phone. The feature depends on the carrier supporting it, so if the option doesn't show up, ask for a new QR.

Can I reinstall an eSIM I accidentally deleted?

Sometimes. Many QRs are single-use, so once you delete the profile the norm is to ask the issuer for a new code. If the plan is still valid and has data, the provider can reissue it. That's why deactivating the line is better than deleting it.