How to Set Up eSIM on iPhone 16 & 17 (Step-by-Step Guide)

Quick Answer

To set up an eSIM on any iPhone from XS to iPhone 17: go to Settings > Cellular > Add eSIM, then either scan a QR code or enter the activation details manually. The entire process takes under 2 minutes. iPhone 14 and later (US models) are eSIM-only — there is no physical SIM tray.

For a visual walkthrough, see our full eSIM activation guide.

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Which iPhones Support eSIM?

Not every iPhone supports eSIM. Here’s the complete list:

iPhone Model	eSIM Support	Max eSIMs Stored	Simultaneous Active
iPhone XS / XR	Yes	1 eSIM	1 eSIM + 1 nano-SIM
iPhone 11 (all)	Yes	1 eSIM	1 eSIM + 1 nano-SIM
iPhone 12 (all)	Yes	1 eSIM	1 eSIM + 1 nano-SIM
iPhone 13 (all)	Yes	2 eSIMs	2 (Dual eSIM)
iPhone SE (3rd gen)	Yes	2 eSIMs	2 (Dual eSIM)
iPhone 14 (all)	Yes	8 eSIMs	2 (Dual eSIM)
iPhone 15 (all)	Yes	8 eSIMs	2 (Dual eSIM)
iPhone 16 (all)	Yes	8 eSIMs	2 (Dual eSIM)
iPhone 17 (all)	Yes	8 eSIMs	2 (Dual eSIM)
iPhone X or older	No	—	—

Key detail: iPhone 14 and newer US models have no physical SIM tray. They are eSIM-only. Models sold outside the US may still include a nano-SIM tray.

Check your specific device at e-sim.onl/compatible-devices.

How Do I Set Up an eSIM on iPhone Using a QR Code?

This is the fastest and most common method. After purchasing an eSIM plan (from e-sim.onl or another provider), you’ll receive a QR code via email.

Step 1: Open eSIM Settings

• Open Settings
• Tap Cellular (or Mobile Data in some regions)
• Tap Add eSIM (iPhone 14+) or Add Cellular Plan (older models)

Step 2: Scan the QR Code

• Select Use QR Code
• Point your camera at the QR code
• Your iPhone will detect the eSIM profile automatically

Tip: If the QR code is on your phone screen (in an email), take a screenshot, then use the “Open from Photos” option that appears on iPhone 16 and 17. On older models, display the QR code on another device (laptop, tablet, or print it out).

Step 3: Confirm and Label

• Tap Continue when the carrier plan details appear
• Choose a label for the plan: “Travel,” “Data,” or a custom name like “Japan Trip”
• This label helps you identify the plan later

Step 4: Set Your Line Preferences

Your iPhone will ask how you want to use this new line:

Setting	Recommended Choice
Default Line	Keep your primary (home) line
iMessage & FaceTime	Keep your primary line
Cellular Data	Switch to the new eSIM for travel data
Allow Switching	Turn ON to let iPhone use either line for data

Step 5: Done

The eSIM is now installed. You’ll see it listed under Settings > Cellular. If the plan is for an upcoming trip, you can leave it inactive until you arrive at your destination — just toggle it on when you land.

How Do I Set Up an eSIM on iPhone Using Manual Entry?

If scanning a QR code isn’t possible, you can enter the activation details manually:

1. Go to Settings > Cellular > Add eSIM
2. Tap Enter Details Manually (at the bottom of the QR code screen)
3. Enter the SM-DP+ address — this looks like a URL (e.g., smdp.example.com)
4. Enter the Activation Code — a long alphanumeric string
5. Enter the Confirmation Code if provided (sometimes optional)
6. Tap Next and wait for activation

Both the SM-DP+ address and activation code are provided in your purchase confirmation email. Copy-paste them to avoid typos.

How Do I Manage Multiple eSIMs on iPhone?

iPhone 14 through iPhone 17 can store up to 8 eSIM profiles, with 2 active simultaneously. This is useful for frequent travelers who visit the same countries regularly.

Viewing All Stored eSIMs

Go to Settings > Cellular. All installed eSIMs appear in a list. Active plans show the carrier name and signal indicator. Inactive plans show as “Off.”

Switching Between eSIMs

1. Go to Settings > Cellular
2. Tap the plan you want to activate
3. Toggle Turn On This Line
4. If you already have 2 active lines, you’ll need to deactivate one first

Deleting an eSIM

1. Go to Settings > Cellular
2. Tap the eSIM plan to remove
3. Scroll down and tap Delete eSIM
4. Confirm deletion

Warning: Deleting an eSIM is permanent. You cannot reinstall the same eSIM profile unless the provider reissues it. Only delete expired or fully used plans.

Renaming an eSIM

1. Go to Settings > Cellular
2. Tap the eSIM
3. Tap Cellular Plan Label
4. Choose a preset label or tap Custom Label

Good naming conventions: “UK Data,” “Home,” “Japan 2026,” “Backup.” This prevents confusion when you have multiple plans installed.

How Do I Switch Cellular Data Between eSIMs?

When you have two active lines, you control which one handles data:

1. Settings > Cellular > Cellular Data
2. Select the line you want to use for internet
3. Optionally enable Allow Cellular Data Switching — this lets iPhone automatically use either line if the preferred one has no coverage

For travel, set your travel eSIM as the cellular data line and keep your home line for calls/SMS only. This gives you local data rates while staying reachable on your home number.

How Do I Set Up an eSIM on iPhone 17?

The iPhone 17 process is identical to iPhone 16 with one addition: iPhone 17 supports eSIM Quick Transfer from nearby iPhones. If you’re upgrading from an iPhone 14 or later, your existing eSIMs can transfer directly during setup without needing to contact each carrier.

Steps specific to iPhone 17:

1. During initial setup, select Transfer eSIMs when prompted
2. Hold your old iPhone nearby
3. Confirm the transfer on both devices
4. All eSIM profiles move to the new phone

For installing a new travel eSIM, follow the standard QR code steps described above.

What Is the Difference Between eSIM and Physical SIM on iPhone?

Feature	eSIM	Physical SIM (nano)
Installation	Digital (QR code or app)	Insert card into tray
Switch plans	Software toggle	Physically swap cards
Store multiple	Up to 8 on iPhone 14+	1 per tray
Lose/damage risk	None	Can lose or break
Activation speed	Instant	Requires store visit or mail
Available on	iPhone XS and later	iPhone 13 and earlier (non-US)

For travelers, eSIM is objectively more convenient. No tiny cards to manage, no SIM ejector tools, no risk of losing your home SIM in a hotel drawer.

How Do I Troubleshoot eSIM Issues on iPhone?

“eSIM Could Not Be Activated”

1. Confirm your iPhone is connected to WiFi or cellular data — activation requires an internet connection
2. Verify the QR code hasn’t expired — some providers set a 30-day activation window
3. Restart your iPhone and try scanning again
4. Check that your iPhone model supports eSIM (iPhone XS or later)

“No Service” After Installing eSIM

1. Make sure the eSIM line is turned on: Settings > Cellular > tap the eSIM > Turn On This Line
2. Check that Cellular Data is set to the correct line: Settings > Cellular > Cellular Data
3. Toggle Airplane Mode on and off
4. Manually select a network: Settings > Cellular > tap the eSIM > Network Selection > turn off Automatic, then pick a network
5. If abroad, confirm Data Roaming is enabled: Settings > Cellular > tap the eSIM > Data Roaming > On

”Cannot Add eSIM Plan”

• Your iPhone may have reached its eSIM storage limit (8 on iPhone 14+, fewer on older models). Delete an unused eSIM first.
• Some carriers lock eSIM functionality. If you bought a carrier-locked iPhone, contact the carrier to unlock eSIM capability.
• Ensure your iPhone is running the latest iOS version: Settings > General > Software Update.

Slow Data Speeds

1. Check your remaining data allowance — you may have hit the plan’s limit
2. Toggle between 5G and LTE: Settings > Cellular > Cellular Data Options > Voice & Data
3. Reset network settings: Settings > General > Transfer or Reset iPhone > Reset > Reset Network Settings

eSIM Shows “Not Supported”

This means your iPhone hardware doesn’t support eSIM (iPhone X or older) or your region’s model has eSIM disabled. No software fix exists — you’ll need a physical SIM or a newer iPhone.

Can I Use eSIM and Physical SIM at the Same Time?

On iPhone models with a SIM tray (iPhone XS through iPhone 13, and iPhone 14+ non-US models): yes. You can have one physical SIM and one eSIM active simultaneously, giving you dual-SIM capability.

On iPhone 14+ US models (eSIM-only): you can have two eSIMs active at the same time, achieving the same dual-SIM result without any physical card.

How Do I Prepare My iPhone eSIM for International Travel?

A pre-travel checklist:

1. Buy your eSIM from e-sim.onl/destinations — choose the destination country or region
2. Install the eSIM at home while on WiFi (scan the QR code)
3. Label it clearly (e.g., “Thailand Data”)
4. Don’t activate data yet — wait until you arrive
5. Disable data roaming on your home SIM to avoid charges
6. When you land: Settings > Cellular > Cellular Data > select your travel eSIM
7. Enable Data Roaming on the travel eSIM if prompted

This takes under 2 minutes at the airport and means you have data before you leave the arrivals hall.

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Related

• eSIM Activation Guide — Detailed walkthrough with screenshots
• Compatible Devices — Full list of eSIM-supported phones and tablets
• All Destinations — Browse eSIM plans for 175+ countries