Can I install an eSIM on an iPhone 8 or older?

No. iPhone X and older don't have eSIM hardware. The first eSIM-capable iPhones are the XS, XS Max, and XR (all 2018). If you have an iPhone 8, 7, SE 1st gen, or older, you need a physical SIM. Every iPhone from XS forward supports eSIM on iOS 12.1 or later.

My US iPhone 14 has no SIM tray. How do I install anything?

US iPhone 14 and newer are eSIM-only by design. The install path is the same as any other iPhone — Settings → Cellular → Add eSIM. Scan the QR from your provider or use direct install from the provider's app. You can store up to 8 eSIM profiles and have two active at once. Non-US iPhone 14 models still have a physical SIM tray.

What's the iOS 17.4 direct-install feature?

Apple added a standard API in iOS 17.4 that lets provider apps install eSIM profiles directly with one tap — no QR code, no copy-paste of codes, no manual entry. The provider's app opens, you confirm the install, and iOS takes over. Not every provider supports it yet, but the feature is live across all iPhones running iOS 17.4 or later.

Can I transfer an eSIM from my old iPhone to a new one?

Yes. On iOS 16 and later, Quick Transfer lets you move eSIM profiles from one iPhone to another during setup or from Settings afterwards. Open Settings → Cellular → Add eSIM → Transfer From Nearby iPhone on the new phone, and follow the prompts on both devices. Works for home carrier eSIMs on most major carriers; travel eSIM support varies by provider.

Can I have several travel eSIMs installed at once?

Yes. An iPhone 13 and later can store up to 8 eSIM profiles and have two active at the same time. Pre-install the Thailand eSIM for next month and the Japan eSIM for the trip after while still running your home line today. Switch between active profiles in Settings → Cellular → tap the line → Turn On This Line or Turn Off This Line.

ConnectivityUpdated April 24, 2026

How to install an eSIM on iPhone: step-by-step

Every iPhone eSIM install method in one place — QR scan, manual entry, iOS 17.4+ direct install, and eSIM Quick Transfer from an old iPhone. Plus the setup steps most guides skip.

Derek AlvarezConnectivity & Gear Editor

April 24, 20267 min read

What you'll learn

Every iPhone from XS/XR (2018) onward supports eSIM install on iOS 12.1 or later.
Primary path: Settings → Cellular → Add eSIM → Use QR Code. Scan the QR from your provider's email.
Without a QR code handy: Settings → Cellular → Add eSIM → Enter Details Manually. Paste the SM-DP+ address and activation code.
iOS 17.4 and later supports one-tap direct install from provider apps — no QR code needed when the provider supports it.
US iPhone 14 and newer are eSIM-only. No physical SIM tray exists on those models.
Label every eSIM clearly ('Travel - Thailand', 'Primary', 'Work') so switching between them in Settings takes one tap.
Set your Default Line for voice and iMessage before you travel. Setting it wrong can silently break incoming calls.

iOS 12.1
Minimum iOS for eSIM
Every modern iOS works
60-90s
Typical install time
Scan to ready-to-use
8
eSIM profiles stored
Most iPhones since 13
2
eSIMs active at once
iPhone 13 and later

Installing an eSIM on an iPhone is genuinely one of the easiest cellular setups Apple has shipped — it's faster than inserting a physical SIM, and most of the friction happens only if you skip a step. Here's the full walkthrough, including the parts most provider emails skip.

Before you install

Three things to confirm.

iOS version. Any iPhone running iOS 12.1 or later supports eSIM, which means every iPhone on a current-ish iOS build is fine. To check: Settings → General → About → iOS Version. If you're on anything older than iOS 16, update before installing — early iOS versions had eSIM install bugs that have been resolved.

Carrier unlock status. A carrier-locked iPhone refuses any eSIM profile that isn't from its home carrier. If you're on a US carrier installment plan, check your unlock status in your carrier's app before installing. T-Mobile and Verizon unlock automatically on payoff; AT&T requires a request. Full details on the compatibility check.

Working internet connection. eSIM install downloads the profile over your existing internet. Install while you're on home Wi-Fi, not after you've landed with no data path available.

Method 1: Scan the QR code

This is the common path. Works on every iPhone that supports eSIM.

Open the email from your provider on a second device (laptop, tablet, another phone). If the QR is on the same iPhone you're installing to, save the image to Photos and you'll scan it from there.
On your iPhone: Settings → Cellular → Add eSIM.
Tap Use QR Code. The camera opens.
Point the camera at the QR code. The iPhone detects it automatically and moves to the next screen.
Confirm the install. The profile downloads — takes 15 to 30 seconds on Wi-Fi.
Label the line (see below — don't skip this).
Set your default line for voice, data, and iMessage.

If the QR code is saved in your Photos on the same device, there's a small link during step 3 that says "Enter Details Manually" — instead of manual entry, you can tap the bottom-right "Use existing QR Code in Photos" or similar depending on iOS version.

Method 2: Enter details manually

When the QR won't scan, or when the provider sent you the install details as text rather than an image.

Settings → Cellular → Add eSIM → Use QR Code → Enter Details Manually (bottom of screen).
Paste the SM-DP+ Address your provider emailed (looks like rsp.example.com).
Paste the Activation Code (a long alphanumeric string).
Optionally paste a Confirmation Code if the provider issued one (most don't).
Tap Next. The profile downloads.

The SM-DP+ address and activation code together are equivalent to the QR code — the QR just encodes both in a scannable format. Any provider that issues QR codes can provide these raw fields on request.

Method 3: Direct install (iOS 17.4+)

Apple opened a one-tap install API in iOS 17.4. Provider apps that support it can push a profile directly, no QR needed.

Install the provider's app from the App Store.
Log in and tap the plan you purchased.
Tap the Install eSIM button in the app.
iOS takes over — confirm the install.

Not every provider supports it yet. When they do, this is the fastest path. When they don't, fall back to QR (method 1).

Method 4: eSIM Quick Transfer (iOS 16+)

Moving a line from an old iPhone to a new one.

On the new iPhone during setup (or later in Settings → Cellular → Add eSIM), choose Transfer From Nearby iPhone.
On the old iPhone, confirm the transfer when it prompts.
The line moves in about a minute. The old iPhone loses the line; the new one gains it.

Works for home carrier eSIM on most major US and international carriers. Support for travel eSIMs varies — some providers allow transfer, some require a fresh install on the new device.

After install: label, default lines, data roaming

This is the part most provider emails skip. Three small setup steps that save a lot of confusion.

Label the line. During install, iOS asks what to name the new eSIM. Default is "Secondary." Replace it with something specific: "Travel - Thailand" or "99esim Europe" or whatever the trip is. Over a year of travel you accumulate several eSIMs; labels are the only way to keep them straight.

Set default lines. After install, iOS presents a screen asking which line to use for Default Line (voice), Data, and iMessage/FaceTime. The setup that works for most travelers:

Default Line (voice): your home line. Incoming calls keep reaching you.
Data: the travel eSIM. Maps, rideshare, WhatsApp all run over the travel plan.
iMessage & FaceTime: your home line.

Turn off Data Roaming on your home line. Settings → Cellular → (your home line) → Data Roaming → off. This prevents accidental $10/MB charges if your home carrier tries to bill for international data while you're on the travel eSIM.

Turn on Data Roaming on the travel eSIM. The travel eSIM needs Data Roaming enabled on its own line to connect to foreign towers — even though the plan you bought is for a foreign country. Apple's naming here is genuinely confusing, but it's the right toggle.

Testing the install

Before you fly, confirm the install worked.

Settings → Cellular. Your new eSIM should be listed with its label.
Tap the line. Confirm Turn On This Line is enabled.
Check signal in the status bar. You won't see signal bars for the travel eSIM until you're in the covered country — that's expected.

The profile is installed and dormant. It activates on the first tower it sees in a covered country, typically within 30 seconds of airplane-mode toggling off on arrival.

If the install fails

The three common failures, in order of how often they happen:

QR already used. Each QR is single-use. If you've already scanned it somewhere, it's spent. Contact the provider for a fresh one.

No internet connection. iPhone can't download the profile with no data path. Connect to Wi-Fi first.

Phone is carrier-locked. iOS shows an error like "Cannot Add Cellular Plan." This means the device has refused the profile, not that the profile is invalid. Check your carrier's unlock status.

If you're on an iPhone without eSIM hardware (iPhone 8 or older), the Add eSIM option won't appear at all. See phone compatibility for the full list.

Buy the plan on 99esim, scan the QR, label the line, set your defaults, and you're set.

No. iPhone X and older don't have eSIM hardware. The first eSIM-capable iPhones are the XS, XS Max, and XR (all 2018). If you have an iPhone 8, 7, SE 1st gen, or older, you need a physical SIM. Every iPhone from XS forward supports eSIM on iOS 12.1 or later.

Common mistakes

Installing the eSIM without Wi-Fi or cellular data: eSIM install downloads the carrier profile over your existing internet connection — if the phone has no data path to the provider's servers, the install fails. Install before you fly, while you're on home Wi-Fi. Don't wait until you've landed and have no working data.
Scanning the same QR code twice: Each QR code is single-use by design. Once the profile installs, the QR is spent. Trying to scan it on a second phone or re-install on the same phone after deletion fails silently. If you need to re-install, contact the provider for a fresh QR or a direct-install link.
Forgetting to set the default line for voice and iMessage: After adding the eSIM, iOS asks which line to use for voice, data, and iMessage. If you pick the travel eSIM as default for voice, your home number stops ringing — callers hear nothing or hit voicemail. The safe default: home line for voice and iMessage, travel eSIM for data only.
Labelling eSIMs with the default 'Secondary': iOS labels a new eSIM 'Secondary' unless you rename it during setup. Over a year of travel you accumulate 4-5 'Secondary' lines and can't tell which is Thailand and which is Mexico. Label every install with the country or trip name the moment you add it — it saves an hour of detective work later.

with 99esim

Plan in hand — where to get the eSIM

99esim sells travel data plans for 155 countries. The QR code arrives in your inbox within 60 seconds of purchase. Follow the install path above, label the line, and you're set before you fly.

Get 99esim Android user? See the Android install guide

Connectivity & Gear Editor

Derek Alvarez

Miami, FL

Miami-based technology writer covering mobile connectivity, travel gear, and the infrastructure that keeps travelers online. Spent twelve years as an enterprise IT consultant before realizing he preferred writing about the equipment to maintaining it. Tests every eSIM, hotspot, and charging brick he reviews — usually in places with questionable coverage. Cuban-American, fluent in Spanish, collects old film cameras he rarely uses.

View all articles by Derek

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Can I install an eSIM on an iPhone 8 or older?−

My US iPhone 14 has no SIM tray. How do I install anything?+

What's the iOS 17.4 direct-install feature?+

Can I transfer an eSIM from my old iPhone to a new one?+

Can I have several travel eSIMs installed at once?+