How to Activate eSIM on iPhone: Step-by-Step for All Models

Setting up an eSIM on iPhone takes under 5 minutes when you know exactly where to tap. The process is straightforward on iOS 16, 17, and 18 — but the exact steps differ slightly depending on your iPhone model, your iOS version, and whether you’re activating a travel eSIM via QR code or setting up a carrier plan directly through the app. This guide covers every method and every supported iPhone model, from the iPhone XR and XS through the current iPhone 16 lineup, so you finish this page with a working eSIM regardless of which device you’re holding.

Which iPhones Support eSIM?

Before starting, confirm your model supports eSIM. Every iPhone from the XR and XS onward does — but the number of supported eSIM profiles and whether a physical SIM tray exists varies by model and region.

Important: US-purchased iPhone 14, 15, and 16 models have no physical SIM tray — eSIM is the only way to connect. Models purchased outside the US include both a nano-SIM tray and eSIM support.

If you’re not sure which model you have, go to Settings → General → About → Model Name.

Before You Start: Checklist

Work through this list before attempting activation. Most eSIM failures happen because one of these conditions isn’t met:

• Device is carrier-unlocked. Go to Settings → General → About → scroll down to “Carrier Lock.” If it says “No SIM restrictions,” you’re unlocked. If it says “SIM Locked,” contact your carrier to unlock before proceeding — third-party eSIM profiles will not install on a locked device.
• iOS is up to date. Go to Settings → General → Software Update. eSIM activation works on iOS 12.1 or later, but iOS 16 or later is recommended for the smoothest experience.
• You have a stable Wi-Fi connection. eSIM profiles download over the internet. A weak connection can interrupt the download or invalidate a QR code.
• You have the QR code ready — either printed, on a second device, or saved as a screenshot. The QR code is single-use. A partial scan on a poor connection can invalidate it without completing the installation.
• The eSIM profile hasn’t been previously installed. Most travel eSIM providers issue one-time QR codes. If the code was already scanned — even partially — it won’t work again. Contact your provider for a replacement.

Method 1: Activate eSIM via QR Code (All Models, iOS 12.1+)

This is the most common method for travel eSIM plans purchased from providers like Airalo, Yesim, Saily, Nomad, or Holafly.

Step 1. Open Settings on your iPhone.

Step 2. Tap Cellular (on iOS 15 and earlier, this may appear as “Mobile Data” depending on your region).

Step 3. Tap Add eSIM (on iOS 16 and later) or Add Cellular Plan (on iOS 15 and earlier).

Step 4. Tap Use QR Code. Your iPhone’s camera opens automatically.

Step 5. Hold your camera over the QR code provided by your eSIM provider. The code should fill the frame — keep the phone still until the code is detected.

Step 6. A prompt appears: “Cellular Plan Detected.” Tap Continue.

Step 7. Tap Add Cellular Plan to confirm the download. The profile downloads in 1–3 minutes depending on your Wi-Fi speed.

Step 8. You’ll be asked to label the new line. Tap Custom Label and name it something recognizable — for example, “Japan Trip” or “Europe Data.” This helps when switching between lines later.

Step 9. You’re asked: “Which line do you want to use for cellular data?” Select your new eSIM.

Step 10. You’re asked: “Which line do you want to use for calls?” If you want to keep your home number for calls, select your existing SIM. If this is your only line, select the new eSIM.

Step 11. You’re asked: “Which line do you want to use for iMessage and FaceTime?” Select the appropriate line based on which number you want to use.

Step 12. Enable data roaming. This step is critical and often missed. Go to Settings → Cellular → tap your new eSIM line → turn on Data Roaming. Without this, the eSIM installs correctly but no data flows.

Method 2: Activate eSIM Directly on iOS 17 and iOS 18 (No QR Code Required)

Starting with iOS 17, iPhones can install eSIM profiles directly from the provider’s app without scanning a QR code. This is currently supported by major US carriers (AT&T, T-Mobile, Verizon) and a growing number of travel eSIM providers.

Step 1. Download your eSIM provider’s app from the App Store (e.g., the Airalo app, Yesim app, or your carrier’s app).

Step 2. Complete your plan purchase within the app.

Step 3. Tap Install eSIM or Activate within the app. The app pushes the profile directly to your device — no camera or QR code involved.

Step 4. A system prompt appears asking permission to add the cellular plan. Tap Allow.

Step 5. Follow the same steps as Method 1 from Step 8 onward: label the line, assign it for data, and enable Data Roaming.

This method is faster and eliminates the risk of QR code scan errors. If your provider supports it and you’re on iOS 17+, use this over the QR code method.

Method 3: Activate eSIM via Activation Code (Manual Entry)

Some providers give an activation code instead of a QR code — a long alphanumeric string you enter manually. Use this if you lost the QR code email or can’t display it on a separate screen.

Step 1. Go to Settings → Cellular → Add eSIM.

Step 2. Tap Use QR Code, then tap Enter Details Manually at the bottom of the screen.

Step 3. Enter the SM-DP+ Address and the Activation Code provided by your carrier or eSIM provider. These are two separate fields.

Step 4. Tap Next. The profile downloads the same as with a QR code.

Step 5. Follow Steps 8–12 from Method 1 to complete setup.

How to Activate eSIM on iPhone 11

The iPhone 11, 11 Pro, and 11 Pro Max run on iOS 13 minimum, with full support up to iOS 16 and 17 depending on the device. Use Method 1 (QR code). These models support one active eSIM at a time alongside the physical nano-SIM.

On the iPhone 11, the cellular menu shows under Settings → Cellular → Add Cellular Plan (not “Add eSIM” — that label appears from iOS 16 onward). Everything else follows Method 1 exactly. Maximum stored eSIM profiles: 5.

How to Activate eSIM on iPhone 13

The iPhone 13 lineup introduced Dual eSIM — you can run two eSIM lines active simultaneously, in addition to the physical nano-SIM for a total of three lines (though only two can be active for data at once). This is useful for travelers who want a home eSIM and a travel eSIM both active without a physical card.

Activation follows Method 1 or Method 2 exactly. When prompted to assign lines, you can assign two different eSIM profiles to different functions — for example, one eSIM for calls, one eSIM for data. Maximum stored eSIM profiles: 5 on original iOS 13, up to 8 after updating to iOS 16+.

How to Activate eSIM on iPhone 14

US-purchased iPhone 14 models have no physical SIM tray. The phone supports up to 8 stored eSIM profiles with 2 active simultaneously. This is also the first model where iOS 16’s eSIM transfer feature works fully.

Activation follows Method 1, 2, or 3. On US iPhone 14 models, the first time you power on a new device, iOS walks you through eSIM setup during initial configuration. If you’re adding a second eSIM after setup, go to Settings → Cellular → Add eSIM.

One specific issue on iPhone 14: if you previously had an eSIM on an iPhone 13 and upgraded, you can transfer the eSIM directly — see the Transfer section below.

How to Activate eSIM on iPhone 15

The iPhone 15 lineup (15, 15 Plus, 15 Pro, 15 Pro Max) supports up to 8 stored eSIM profiles with 2 active at once. US models are eSIM-only. Non-US models include a nano-SIM tray.

iPhone 15 runs iOS 17 out of the box, which means Method 2 (direct app installation without QR code) is available from day one. For travel eSIMs from providers that support iOS 17 direct install, this is the fastest activation method. For providers that still use QR codes, Method 1 works identically.

A note specific to iPhone 15: iOS 17 introduced eSIM Quick Transfer between two iPhone 15 devices nearby, without requiring a QR code or contacting the carrier. Go to Settings → Cellular → Add eSIM → Transfer from Nearby iPhone and follow the prompts on both devices.

How to Activate eSIM on iPhone 16

iPhone 16 (16, 16 Plus, 16 Pro, 16 Pro Max) runs iOS 18 out of the box and supports up to 8 stored eSIM profiles with 2 active simultaneously. US models are eSIM-only.

Activation follows Method 1, 2, or 3 — same as iPhone 15. iOS 18 improves the eSIM management interface slightly: the Cellular settings menu shows all stored eSIM profiles in a cleaner list, with a toggle to enable or disable each one without deleting it. This makes it easier to manage multiple travel eSIMs across different trips without having to re-download profiles each time.

On iPhone 16 Pro and 16 Pro Max, the Always On Network feature (which maintains some background connectivity even in low-signal areas) works with eSIM profiles the same as physical SIM.

How to Transfer an eSIM to a New iPhone

If you’re upgrading phones and want to move an eSIM from your old iPhone to the new one, the process depends on which models are involved.

Transfer via iOS Quick Transfer (iPhone XS or later → any newer model)

Step 1. Place both iPhones near each other.

Step 2. On the new iPhone, go to Settings → Cellular → Add eSIM → Transfer from Nearby iPhone.

Step 3. On the old iPhone, a prompt appears asking to confirm the transfer. Tap Transfer.

Step 4. The eSIM profile moves to the new device. The old iPhone’s eSIM is deactivated automatically.

This method works for carrier eSIMs (AT&T, T-Mobile, Verizon, etc.). For travel eSIM profiles from third-party providers, check the provider’s policy — many do not support remote transfer and require contacting support or repurchasing the plan.

Transfer via Carrier Website or App

If Quick Transfer doesn’t work or isn’t available:

Step 1. Log into your carrier’s website or app on the new device.

Step 2. Navigate to SIM management or device settings.

Step 3. Select “Move to new device” or “Activate eSIM on this device” — the exact label varies by carrier.

Step 4. Follow the carrier’s prompts, which typically involve confirming your account identity and approving the transfer.

Common eSIM Activation Problems and Fixes

“Cellular Plan Detected” doesn’t appear after scanning QR code.
The QR code may have been invalidated by a partial scan. Contact your eSIM provider — most will reissue a replacement code. Ensure Wi-Fi is stable before the next attempt.

eSIM downloaded but no data connection.
Data Roaming is off for the eSIM line. Go to Settings → Cellular → tap your eSIM line → enable Data Roaming. This is the most common issue with travel eSIMs.

“This plan cannot be added to this device.”
Your iPhone is carrier-locked. Go to Settings → General → About → Carrier Lock. If locked, contact your carrier to unlock the device before attempting eSIM installation.

eSIM shows “No Service” after activation.
Toggle airplane mode on and off to force a network rescan: Settings → Airplane Mode → On → wait 10 seconds → Off. If this doesn’t resolve it, check whether the eSIM line is set as the active data line under Settings → Cellular → Cellular Data.

QR code says “already been used.”
Single-use QR codes cannot be reused once successfully scanned, even if the installation didn’t complete. Contact your eSIM provider with your order confirmation for a replacement.

“Could not complete eSIM setup” error.
This usually means a server-side issue with the carrier or provider. Wait 15 minutes and try again. If the issue persists, contact the provider — the profile may need to be reissued.

iPhone 14/15/16 (US) shows “SIM Not Supported.”
This appears if you’re trying to use a physical SIM adapter with a US iPhone 14/15/16, which have no SIM tray. These devices are eSIM-only — physical SIM cards cannot be used.

Managing Multiple eSIM Profiles

Once you have more than one eSIM profile installed, managing them takes seconds:

Switch active eSIM: Settings → Cellular → tap the eSIM line you want to activate → enable “Turn On This Line.”

Deactivate an eSIM without deleting it: Settings → Cellular → tap the eSIM line → toggle “Turn On This Line” off. The profile stays saved for future use.

Delete an eSIM: Settings → Cellular → tap the eSIM line → scroll to “Remove Cellular Plan” → confirm. Note: for most travel eSIM providers, a deleted profile cannot be reinstalled — the QR code becomes invalid once the profile is removed.

Rename a line: Settings → Cellular → tap the eSIM line → tap the current label at the top → enter a new name.

For travelers managing eSIMs from multiple providers across different countries, keeping profiles labeled clearly (“Japan Jan 2026,” “Europe Summer”) prevents confusion when switching between them.

FAQ