Quick answer: The iPhone 16 supports eSIM, and every model in the lineup — iPhone 16, 16 Plus, 16 Pro, and 16 Pro Max — can store up to 8 eSIMs and run two at once (dual eSIM). To activate a Simbye eSIM on iPhone 16, open Settings → Cellular → Add eSIM and scan the QR code; the eSIM activates in under two minutes. A Simbye travel eSIM covers 190+ countries and starts at $3, with the QR code delivered instantly after checkout. US iPhone 16 models are eSIM-only and have no physical SIM tray; models sold outside the United States keep a nano-SIM slot alongside eSIM.
The iPhone 16 fully supports eSIM technology, which makes it one of the easiest phones for staying connected while travelling abroad. Instead of swapping physical SIM cards at every destination, you install a travel eSIM in minutes and keep your home number active at the same time.
This guide covers which iPhone 16 models support eSIM, step-by-step activation, dual-SIM setup, the most common errors with their fixes, and how to get a Simbye eSIM that works on any iPhone 16.
iPhone 16 eSIM compatibility
Every iPhone 16 model ships with eSIM. There is no "eSIM version" to look for — the feature is built into all four 2024 models. What differs is whether the phone also has a physical nano-SIM tray, and that depends on where it was sold.
| Feature | Details |
|---|---|
| eSIM support | ✅ Yes — all models (16, 16 Plus, 16 Pro, 16 Pro Max) |
| Dual eSIM | ✅ Yes — two eSIMs active at once, one as the data line |
| Stored eSIM profiles | Up to 8 eSIMs saved on the device |
| Physical SIM (US models) | ❌ None — US iPhone 16 is eSIM-only, no SIM tray |
| Physical SIM (non-US models) | ✅ 1× nano-SIM slot plus eSIM |
| Chip | A18 (16 / 16 Plus) · A18 Pro (16 Pro / 16 Pro Max) |
| Release year | 2024 |
US models are eSIM-only. If you bought your iPhone 16 in the United States, it has no SIM tray at all — eSIM is the only way to connect to a network. This is actually convenient for travel, because a Simbye eSIM installs digitally with no physical card to lose. Models sold in Europe, the UK, Asia, and most other regions keep a nano-SIM slot, so you can run your home nano-SIM and a travel eSIM side by side.
To confirm your model supports eSIM (it does), you can also open Settings → General → About and look for the Available SIM or EID field — an EID number means eSIM is ready to use.
How to activate an eSIM on iPhone 16
Activation takes about two minutes. You need a Wi-Fi or mobile data connection to download the eSIM profile, so it is easiest to do this before you leave home. Follow these steps in order:
- Buy your eSIM. Get a travel eSIM from Simbye (190+ countries, from $3). The QR code arrives instantly by email after checkout.
- Open Settings. Go to Settings → Cellular (called Mobile Data in some regions).
- Tap Add eSIM. Choose Add eSIM or Add Cellular Plan.
- Scan the QR code. Point the camera at the QR code from Simbye, or tap Enter Details Manually to paste the SM-DP+ address and activation code instead.
- Label the plan. Name it something clear like "Travel" or "Japan Data" so you can tell it apart from your main line.
- Set it as the data line. Choose the new eSIM as your default line for mobile data.
- Activate on arrival. The eSIM connects automatically when you reach a supported network in your destination. Turn on Data Roaming for the eSIM line so it can register abroad.
For a full walkthrough with screenshots, see the complete iPhone eSIM installation guide. If you prefer not to scan a QR code, the manual SM-DP+ install method works the same way.
You can also install and manage Simbye eSIMs directly from the Simbye app, which generates the QR code in-app and lets you top up without leaving the phone. The app is available on the App Store and Google Play.
Dual-SIM setup on iPhone 16
The iPhone 16's dual-SIM support is what makes it so useful for travel: you keep your home number reachable while data runs over a cheaper travel eSIM. The setup differs slightly by model.
- Line 1 — your home number. This is your physical nano-SIM (non-US models) or your home-carrier eSIM (US models). Keep it active for calls, texts, and bank verification codes.
- Line 2 — your Simbye travel eSIM. Use it for affordable mobile data abroad.
To configure it: go to Settings → Cellular, select your travel eSIM, turn on Data Roaming, and set it as the default data line. Then open Cellular Data and make sure Allow Cellular Data Switching is off if you want to avoid your home line using expensive roaming data.
A useful detail: keep your home line set for calls and SMS and the Simbye eSIM for data only. That way you still receive your usual calls and one-time passcodes, but every megabyte of data goes through the low-cost travel plan. For more on how the two technologies compare, read eSIM vs SIM card: key differences.
Common iPhone 16 eSIM issues and fixes
Most eSIM problems on the iPhone 16 come down to a locked phone, a missing data connection, or roaming being switched off. This table maps each symptom to the fix that resolves it.
| Symptom | Likely cause | Fix |
|---|---|---|
| "eSIM Cannot Be Added" | Phone is carrier-locked, or no internet to download the profile | Ask your carrier to unlock the iPhone; connect to Wi-Fi, then re-add the eSIM |
| "This code is no longer valid" | QR code already scanned — each code is single-use | Reinstall the saved profile via Settings instead of re-scanning; see the fix guide |
| "Unable to Activate eSIM" | Temporary network handshake failure | Toggle Airplane Mode, restart the iPhone, then retry; full steps here |
| No data after landing | eSIM not set as data line, or Data Roaming off | Set the eSIM as default data line and turn on Data Roaming for that line |
| Connected but no internet | Wrong or missing APN, or stuck on the wrong carrier | Check APN settings (what is an APN?); set Network Selection to manual and pick a supported carrier |
| Want to remove the eSIM | Trip finished, freeing a profile slot | Settings → Cellular → select the eSIM → Remove eSIM (permanent — wait until the plan expires if data remains) |
If a profile keeps failing, reset network settings via Settings → General → Transfer or Reset iPhone → Reset → Reset Network Settings, then add the eSIM again. Still stuck? The eSIM not working troubleshooting guide covers the less common causes.
How to get a Simbye eSIM for iPhone 16
A Simbye eSIM works on every iPhone 16 model out of the box. Plans cover 190+ countries and start at $3, the QR code is delivered instantly so you can install it before you fly, and you can top up data without buying a new eSIM. Every purchase also earns 5% cashback in your Simbye wallet to put toward your next trip.
Popular destinations for iPhone 16 travellers:
- Europe — 39 countries from $3 (Europe guide)
- Japan — from $3 (Japan guide)
- USA — from $3 (USA guide)
- Thailand — from $3 (Thailand guide)
- Turkey — from $3 (Turkey guide)
Not sure how much data to buy? Read how much data do I need when travelling? — or browse every plan at Simbye eSIM plans.
FAQ
Does the iPhone 16 support eSIM?
Yes. Every iPhone 16 model — iPhone 16, 16 Plus, 16 Pro, and 16 Pro Max — supports eSIM and dual eSIM. The phone can store up to 8 eSIM profiles and keep two of them active at the same time.
How many eSIMs can the iPhone 16 store?
The iPhone 16 stores up to 8 eSIM profiles on the device. You can install many plans and switch between them in Settings, but only two can be active at once (dual eSIM).
Does the US iPhone 16 have a SIM card slot?
No. iPhone 16 models sold in the United States are eSIM-only and have no physical SIM tray. A travel eSIM such as Simbye is the standard way to add a local or travel plan on a US iPhone 16. Models sold outside the US keep a nano-SIM slot alongside eSIM.
Can I use an eSIM and a physical SIM at the same time on iPhone 16?
On non-US models, yes — you can run one physical nano-SIM plus an eSIM together. On US models there is no SIM tray, so you instead run two eSIMs at once for dual-SIM.
How do I activate a Simbye eSIM on iPhone 16?
Open Settings → Cellular → Add eSIM, then scan the QR code Simbye sends you after checkout. Label the plan, set it as your data line, and turn on Data Roaming. The eSIM activates in under two minutes once you connect to a supported network.
Is my iPhone 16 unlocked for eSIM?
If you bought the iPhone 16 from Apple or paid full price, it is unlocked. If you got it through a carrier instalment plan, it may be locked — contact your carrier to unlock it. You can check under Settings → General → About for "No SIM restrictions".
Will using a travel eSIM void my iPhone 16 warranty?
No. eSIM is a built-in, Apple-supported feature of the iPhone 16. Installing a travel eSIM is completely normal and does not affect your warranty.
How much does an eSIM for iPhone 16 cost?
A Simbye travel eSIM for iPhone 16 starts at $3 and covers 190+ countries. You receive the QR code instantly, can top up data without buying a new eSIM, and earn 5% cashback on every purchase.
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