iPhone eSIM Abroad: Configuring Your Data for Global Travel (2026)

When traveling internationally with an iPhone, an eSIM provides a digital alternative to physical SIM cards, allowing you to activate local data plans without swapping hardware. This streamlines connectivity management, enables multi-network access, and often delivers better value than traditional roaming.

eSIM Primer: Why iPhones Are Ideal for Global Connectivity

The transition to eSIM has been a significant shift in mobile telecommunications, particularly championed by Apple. Since the iPhone XS, XR, and 11 series, all iPhones have included eSIM capability, culminating in the US models of the iPhone 14, which dropped the physical SIM tray entirely. This move has positioned iPhones as arguably the most travel-ready smartphones, offering unparalleled flexibility for international data.

An eSIM, or embedded SIM, is a small chip permanently built into your phone's logic board. Instead of swapping physical plastic cards, you download a digital SIM profile, which contains all the necessary subscriber identity modules (SIM) data. This allows you to provision multiple network profiles on a single device, switching between them with a few taps in iOS settings. For instance, you could have your primary home plan, a Cellesim travel eSIM for Europe, and another for a specific country, all active and ready to use.

This architecture provides a distinct advantage for frequent travelers. Imagine arriving at Narita Airport in Tokyo, having already purchased and installed a data plan. Upon landing, you simply switch to your Japan eSIM profile, and within moments, you're connected to a local network like NTT Docomo or SoftBank, likely utilizing their robust Band 3 (1800MHz) for urban coverage or Band 1 (2100MHz) for broader reach, sometimes even leveraging Band 42 (3.5GHz) for 5G in dense areas. No fumbling with tiny tools, no risk of losing your home SIM, just seamless transition.

iPhone eSIM Compatibility: What Models Support It?

Virtually all modern iPhones support eSIM, but there are nuances. While all iPhones from the XS/XR/11 generation onward support at least one eSIM alongside a physical SIM, the US-market iPhone 14, 15, and future models are eSIM-only. This means they do not have a physical SIM tray at all. For travelers, this is primarily a convenience factor, as it removes any temptation to use a physical SIM and simplifies the management to purely digital profiles.

Key iPhone eSIM compatibility points:

• iPhone XS, XS Max, XR, 11, 12, 13 series (non-US): Support one eSIM and one physical nano-SIM.
• iPhone 13 series (US): Support two active eSIMs.
• iPhone 14, 15 series (US): eSIM-only, supporting multiple eSIM profiles, with two active concurrently.
• iPhone 14, 15 series (non-US): Support one eSIM and one physical nano-SIM.

It's always prudent to double-check your specific iPhone model's regional variant, especially if you purchased it abroad, to understand its exact SIM configuration. You can find this information under Settings > General > About > Model Number.

The Benefits of eSIM for iPhone Users Traveling Abroad

For iPhone users, eSIMs offer several compelling advantages over traditional roaming or local physical SIMs:

• Instant Activation: Purchase an eSIM for France (or any other destination) online and activate it before you even board your flight. No need to hunt for local SIM card vendors after a long journey.
• Dual SIM Functionality: Keep your home number active for calls and texts (potentially on Wi-Fi Calling) while using your travel eSIM for data. This is crucial for two-factor authentication or emergency contacts.
• Cost-Effectiveness: Avoid exorbitant roaming charges. eSIM plans from providers like Cellesim often offer significantly better per-GB rates than your home carrier's international roaming packages. For example, a Cellesim regional Europe plan can offer data at a fraction of what a typical US carrier charges for roaming on Band 20 (800MHz) or Band 3 (1800MHz) in the EU.
• Environmental Impact: Less plastic waste from disposable physical SIM cards.
• Security: A digital profile cannot be physically removed or stolen from your device.

These benefits translate directly into a smoother, more connected travel experience. From navigating unfamiliar streets using Apple Maps to staying in touch with family via FaceTime, reliable data is non-negotiable.

Activating Your eSIM on iOS: A Step-by-Step Walkthrough

Activating an eSIM on your iPhone is a straightforward process, typically involving a QR code scan or manual entry. Most providers, including Cellesim, provide a QR code that simplifies setup.

QR Code Activation: The Easiest Method

This is the most common and recommended method for adding an eSIM to your iPhone.

1. Ensure Wi-Fi Connection: Before you start, make sure your iPhone is connected to a stable Wi-Fi network. This is critical for downloading the eSIM profile.
2. Access Cellular Settings: Go to Settings > Cellular (or Mobile Data).
3. Add eSIM: Tap on Add eSIM.
4. Scan QR Code: Choose Use QR Code. Your iPhone's camera will open. Scan the QR code provided by your eSIM vendor (usually found in your purchase confirmation email or on their website).
5. Follow Prompts: Your iPhone will detect the cellular plan. Tap Continue or Add Cellular Plan. You may be asked to label your plans, for example, 'Primary' and 'Travel France'.
6. Choose Default Line: After installation, iOS will prompt you to choose a default line for calls, messages, and cellular data. For data, select your new travel eSIM. For calls/texts, you might keep your primary line, especially if it supports Wi-Fi Calling.

The entire process typically takes less than two minutes, assuming a good Wi-Fi connection. Remember, the eSIM profile download uses a small amount of data, which is why Wi-Fi is essential.

Manual eSIM Setup for Edge Cases

Occasionally, you might receive activation details as a manual entry code rather than a QR code. This is less common but still supported by iOS.

1. Ensure Wi-Fi Connection: As with QR code activation, a stable Wi-Fi connection is necessary.
2. Access Cellular Settings: Go to Settings > Cellular (or Mobile Data).
3. Add eSIM: Tap on Add eSIM.
4. Enter Details Manually: Choose Enter Details Manually at the bottom of the screen.
5. Input SM-DP+ Address, Activation Code, and Confirmation Code: You'll need to enter the SM-DP+ Address (Subscription Manager Data Preparation+), Activation Code, and sometimes a Confirmation Code provided by your eSIM vendor. These are unique identifiers for provisioning your eSIM profile.
6. Follow Prompts: As with QR activation, follow the on-screen prompts to label your plan and set default lines.

Manual entry is particularly useful in situations where scanning a QR code is difficult, perhaps due to a damaged screen or if you're setting up from a device that can't display the QR code clearly.

Managing Multiple eSIMs and Data Plans

One of the iPhone's greatest strengths with eSIM is its ability to manage multiple profiles. You can store many eSIMs on your device, though only two (on US models of iPhone 13/14/15) or one (on non-US models) can be active at any given time for cellular data.

Labeling and Organizing Your eSIMs

iOS provides robust tools for labeling and organizing your cellular plans, making it easy to distinguish between them. When you add a new eSIM, you'll be prompted to give it a custom label (e.g., 'Work', 'Personal', 'Travel Europe', 'Japan Data'). You can change these labels anytime by going to Settings > Cellular (or Mobile Data) and tapping on the plan you wish to rename.

Best practices for labeling:

• Geographic Region: 'Travel UK', 'Asia Roam'
• Purpose: 'Work Data', 'Holiday SIM'
• Provider: 'Cellesim EU', 'Local Carrier AU'

Clear labeling prevents accidental data usage on the wrong plan, which can lead to unexpected charges, especially if you have a pay-as-you-go eSIM or a primary plan with high roaming rates.

Switching Between eSIMs for Data and Calls

Switching your active data eSIM is simple:

1. Go to Settings > Cellular (or Mobile Data).
2. Tap on Cellular Data (or Mobile Data).
3. Select the eSIM you wish to use for data from the list of installed plans.

For calls and messages, iOS allows you to set a default line. However, when making a call, you can always tap the line indicator above the dial pad to choose which line to use for that specific call. For messages, you can select the line before sending an iMessage or SMS. This flexibility ensures you maintain control over which number is used for different communication types, an important consideration if you're trying to keep your home number private while abroad.

Network Selection and Optimisation for Peak Performance

Once your eSIM is active, your iPhone will typically connect to the strongest available network. However, sometimes manual intervention can optimize your experience, especially if you're in a fringe coverage area or a congested urban environment.

Automatic vs. Manual Network Selection

By default, your iPhone sets network selection to automatic, allowing it to dynamically choose the best available carrier. In most cases, this works flawlessly. However, if you're experiencing poor performance, inconsistent signal, or unexpected roaming, you might consider manual selection.

To switch to manual network selection:

1. Go to Settings > Cellular (or Mobile Data).
2. Tap on your active travel eSIM plan.
3. Tap on Network Selection.
4. Toggle off Automatic.
5. Your iPhone will scan for available networks. Select a preferred network from the list.

Be aware that manually selecting a network means your phone will stick to that network. If that network loses coverage, your phone won't automatically switch to another. You'll need to manually select a different one or re-enable automatic selection. This is particularly useful in countries with multiple MNOs (Mobile Network Operators) where one might offer better 5G coverage on specific bands, such as n78 (3.5GHz) or n28 (700MHz), depending on the region.

Understanding APN Settings and Data Roaming

APN (Access Point Name) settings are crucial for establishing a data connection. They tell your phone how to connect to the internet through your carrier's gateway. For most Cellesim eSIMs, these settings are automatically configured upon activation. However, in rare instances or with specific older iOS versions, you might need to input them manually.

You can find APN settings under Settings > Cellular (or Mobile Data) > Your eSIM Plan > Cellular Data Network. Here, you'll see fields for APN, Username, and Password. If your data isn't working, check your eSIM provider's documentation for the correct APN. Common APNs are 'internet' or 'data', but some carriers use proprietary ones.

Data Roaming: For eSIMs, data roaming must often be enabled even if you're on a local plan. This is because many global eSIM providers operate as MVNOs (Mobile Virtual Network Operators) and technically 'roam' on partner networks in different countries. Always ensure data roaming is toggled 'On' for your active travel eSIM under Settings > Cellular (or Mobile Data) > Your eSIM Plan > Data Roaming. This doesn't incur extra charges with a Cellesim plan, as the roaming is part of the package.

Troubleshooting Common eSIM Issues on iPhone

While eSIMs are largely reliable, you might occasionally encounter issues. Here's a systematic approach to troubleshooting common problems:

No Service or No Data Connection

If your iPhone shows 'No Service' or you can't access data:

• Check Data Roaming: As mentioned, ensure Data Roaming is enabled for your travel eSIM.
• Restart iPhone: A classic fix, often resolves transient network issues.
• Toggle Airplane Mode: Turn Airplane Mode on for 30 seconds, then off. This forces a reconnection to the cellular network.
• Check APN Settings: Verify that the APN settings are correct, especially if you're using a relatively niche provider or an older iOS version.
• Manual Network Selection: Try manually selecting a network operator from the list of available networks (see previous section).
• Update Carrier Settings: Go to Settings > General > About. If an update is available, you'll be prompted. Carrier settings updates often improve network compatibility and performance.

If these steps don't work, ensure your eSIM plan is active and has data allowances remaining. You can usually check this via your provider's app or website.

eSIM Not Appearing in Settings

If you've installed an eSIM but it doesn't show up in your Cellular settings:

• Confirm Installation: Did you complete all steps of the QR code scan or manual entry? Sometimes a prompt might have been missed.
• Re-scan/Re-enter: Try the installation process again. Ensure you have a stable Wi-Fi connection throughout.
• Check for Pending Profiles: Sometimes a profile download can be interrupted. Look for any incomplete installations under Settings > Cellular (or Mobile Data) > Add eSIM.
• Contact Support: If all else fails, reach out to your eSIM provider's customer support. They can verify if the eSIM profile was successfully provisioned to your device's EID (Embedded Identity Document), which is a unique identifier for your eSIM chip.

Remember that the EID of your iPhone is a fixed, unique identifier, similar to an IMEI for a physical SIM slot. Your eSIM provider uses this to push the profile to your device.

Understanding Data Speeds and Network Performance Abroad

Data speeds abroad can vary significantly depending on the local infrastructure, network congestion, and the specific frequency bands utilized. While eSIMs offer flexibility, they don't magically override physics or local network limitations.

Factors Influencing Speed and Coverage

Several variables dictate your real-world data speeds:

• Network Technology: 5G offers the highest theoretical speeds, followed by 4G LTE, and then 3G. Not all networks in all areas will have 5G. For instance, while major European cities boast robust 5G on Band n78 (3.5GHz) and n1 (2100MHz), rural areas might still rely on 4G LTE on Band 20 (800MHz) or Band 3 (1800MHz), which, though slower, provides wider coverage.
• Spectrum Availability: Different carriers own different frequency bands. A carrier with more contiguous spectrum in a specific band (e.g., Band 7 at 2.6GHz for LTE) can often provide faster speeds than one with fragmented spectrum.
• Network Congestion: During peak hours or at large events (like the Summer Games 2026 in Paris), even the best networks can slow down due to a high density of users.
• Phone Hardware: Newer iPhones have more advanced modems and support more frequency bands, which can lead to better connectivity and speeds in diverse international environments.
• Location: Indoor coverage, especially in older buildings or basements, can be significantly worse than outdoors.

Real-world speeds in a well-covered urban 5G area might see downloads between 150-500 Mbps and uploads of 30-80 Mbps. In a 4G LTE area, expect 20-80 Mbps download and 5-20 Mbps upload. Compare this to the 256kbps throttled speeds some plans offer, which are functional for messaging but not much else.

Benchmarking Your Connection Speed Abroad

To get a real sense of your connectivity, use speed test applications like Speedtest by Ookla or Fast.com. Run tests in different locations and at different times of day to understand typical performance. These apps measure download speed (how fast data comes to your phone), upload speed (how fast data leaves your phone), and latency (the delay before data transfer begins, measured in milliseconds).

High latency can make real-time applications like video calls or online gaming feel sluggish, even if download speeds are decent. A latency under 50ms is generally considered good for most applications. If you're consistently seeing high latency, it might indicate network congestion or a routing issue, potentially through a distant gateway. Keep an eye on the server location reported by the speed test app, as this can influence results.

Voice and Messaging: VoLTE and VoWiFi Considerations

While eSIMs primarily focus on data, voice and messaging are still critical. Understanding VoLTE and VoWiFi is essential for seamless communication.

Making Calls with VoLTE and VoWiFi on Your Travel eSIM

VoLTE (Voice over LTE): This allows voice calls to be carried over the 4G LTE data network, rather than traditional 2G/3G circuits. The benefit is superior call quality (HD Voice) and the ability to use data simultaneously while on a call. Most modern networks support VoLTE. Your iPhone will automatically use VoLTE if the network and your eSIM plan support it. You'll see 'VoLTE' appear briefly next to your signal bars during a call.

VoWiFi (Voice over Wi-Fi, or Wi-Fi Calling): This lets you make and receive calls and texts over a Wi-Fi connection when cellular service is weak or unavailable. This is particularly valuable when traveling, as you can use your home number to make calls back home without roaming charges, even if your home SIM is inactive for data (and assuming your home carrier supports international Wi-Fi Calling).

To enable Wi-Fi Calling for your primary line while using a travel eSIM for data:

1. Ensure your primary line is active (even if only for calls/SMS).
2. Go to Settings > Cellular (or Mobile Data) > Your Primary Line.
3. Tap on Wi-Fi Calling and toggle it on.
4. Ensure you have a stable Wi-Fi connection.

The critical gotcha here is that not all travel eSIMs support VoLTE, and fewer still support VoWiFi for their own numbers. Most Cellesim data eSIMs are data-only, meaning you'll rely on VoIP apps (WhatsApp, FaceTime Audio) or your home number's Wi-Fi Calling for voice. Always confirm VoLTE/VoWiFi support with your eSIM provider if traditional voice calls are a priority for your travel eSIM number.

Dual SIM Benefits for Voice and Messaging

The iPhone's dual SIM capability (physical + eSIM, or dual eSIM) is a game-changer for voice and messaging while traveling. You can:

• Keep your home number active: Use your primary physical SIM or eSIM for calls/texts from home, potentially via Wi-Fi Calling, while your travel eSIM handles all data. This is vital for receiving OTPs (One-Time Passwords) for banking or app logins.
• Local number for convenience: Some longer-term travel eSIMs might include a local number, useful for booking local services, making restaurant reservations, or contacting local emergency services.

In Settings > Cellular (or Mobile Data), you can configure which line is used for which purpose. For instance, you might set your primary line as the default for calls but your travel eSIM as the default for cellular data. iOS is smart enough to route calls and messages correctly, even suggesting which line to use based on your contacts.

Security, Privacy, and Carrier-Grade NAT (CGNAT)

When you connect to any network abroad, security and privacy are paramount. Understanding how eSIMs interact with network technologies like CGNAT is crucial.

Data Security with eSIMs and Public Networks

An eSIM connection itself is no more or less secure than a physical SIM connection. The security of your data largely depends on the network you're connecting to and your online practices. When using a travel eSIM, you're essentially connecting to the internet via a local carrier's network. This connection, especially if it's 4G or 5G, is generally encrypted at the cellular level.

However, the risk often lies with public Wi-Fi networks, which are inherently less secure. If you're on a public Wi-Fi network at a café in Berlin (even if you have an active Cellesim eSIM for Germany), your data could be vulnerable. Always use a VPN (Virtual Private Network) when connecting to public Wi-Fi for sensitive activities like banking or accessing personal information. Many Cellesim eSIMs bundle a VPN service, which is a significant privacy advantage.

Tips for data security:

• Use a VPN: Especially on public Wi-Fi.
• HTTPS Everywhere: Ensure websites you visit use HTTPS.
• Strong Passwords: For all your online accounts.
• Two-Factor Authentication (2FA): Enable it wherever possible.

Understanding Carrier-Grade NAT and IPv6-Only Networks

Carrier-Grade NAT (CGNAT): Many mobile carriers, especially those offering budget-friendly or travel-specific data plans, use CGNAT. This is a networking architecture where multiple subscribers share a single public IPv4 address. While generally transparent to most users, it can cause issues for specific applications that require inbound connections or direct peer-to-peer communication, such as some gaming, VPN configurations, or port forwarding. If you're experiencing connectivity issues with a particular app that requires a direct connection, CGNAT might be the culprit. There's usually no direct user fix for this, short of using a VPN that provides its own public IP or switching to a different carrier/plan.

IPv6-Only Networks: The world is slowly transitioning from IPv4 to IPv6, the next generation of internet protocol. Some mobile networks are now primarily IPv6-only, using IPv6 to connect devices to the internet. For compatibility with older IPv4-only services, these networks employ translation mechanisms (e.g., NAT64/DNS64). For iPhone users, this is usually seamless, as iOS handles the translation automatically. However, extremely rarely, an app or service might have issues with IPv6-only environments. This is becoming less common as more services become IPv6-compatible, but it's a technical detail worth knowing if you encounter unusual connectivity problems.

eSIM Providers and Plan Selection

The market for eSIM providers has grown exponentially, offering a wide range of options for travelers. Making the right choice involves understanding your specific needs.

Evaluating eSIM Plan Options for iPhones

When selecting an eSIM plan for your iPhone, consider the following:

• Coverage Area: Do you need a single-country plan (e.g., eSIM for the Middle East) or a regional/global plan? Cellesim offers multi-country plans, which are ideal for hopping between countries.
• Data Allowance: How much data do you realistically need? Streaming high-definition video consumes significantly more data than casual browsing or messaging. Check how much data you might use for remote work, for example.
• Validity Period: How long is the plan active? Some plans are for 7 days, others for 30, 60, or even 90 days. Match this to your trip duration.
• Speed and Network: Does the eSIM provider partner with leading local carriers (e.g., O2 in the UK, Orange in France, Vodafone in Italy) and offer 4G/5G speeds? Some budget options might cap speeds or only offer 3G.
• Voice/SMS Inclusion: Most travel eSIMs are data-only. If you need a local number for calls/texts, confirm if it's included or if you'll rely on VoIP apps.
• Top-Up Options: Can you easily add more data if you run out?
• Price per GB: Compare the cost-per-gigabyte across different providers.

It's often helpful to read reviews specific to the region you're visiting. What works well in Western Europe might not be optimal in, say, Central Asia, where network infrastructure can vary dramatically.

Why Cellesim Is a Strong Contender for iPhone Users

Cellesim is designed with the international iPhone user in mind. Here's why it often stands out:

• Global Coverage: Extensive country and regional plans, ensuring you have connectivity wherever your iPhone takes you.
• Transparent Pricing: Clear, upfront costs with no hidden roaming fees. What you see is what you pay.
• Easy Activation: Seamless QR code activation process, perfectly integrated with iOS.
• Reliable Networks: Partnerships with tier-1 and tier-2 local carriers, ensuring access to robust 4G LTE and 5G networks, often leveraging prevalent bands like B3 (1800MHz), B7 (2600MHz), and n78 (3.5GHz) for optimal performance in urban areas.
• Customer Support: Dedicated support to assist with any activation or connectivity issues, critical when you're thousands of miles from home.

When comparing eSIM alternatives, Cellesim often provides a balanced blend of coverage, value, and user-friendliness, making it a compelling choice for iPhone-toting travelers.

Future of eSIM on iPhones: What to Expect

The trajectory of eSIM on iPhones is clear: increased adoption and further integration. Apple's decision to remove the physical SIM tray in US models of the iPhone 14 and 15 signals a strong commitment to the technology.

iOS Updates and eSIM Enhancements

Expect future iOS updates (e.g., iOS 18, iOS 19) to bring even more sophisticated eSIM management features. We might see:

• Smarter Network Prioritization: More intelligent algorithms for switching between active eSIMs based on location, signal strength, or even application usage.
• Enhanced Data Usage Monitoring: More granular control and reporting on data consumption per eSIM profile, potentially with real-time alerts integrated directly into the OS.
• Improved eSIM Transfer: Simplified methods for transferring eSIMs between iPhones, possibly leveraging iCloud or direct device-to-device transfer without needing to contact the carrier.
• Integrated eSIM Marketplaces: While unlikely to be a fully open marketplace, Apple might further streamline the purchase and activation process for eSIMs directly from within iOS settings, potentially partnering with select providers.

As the technology matures, the user experience will only get smoother and more intuitive, further cementing the iPhone's status as the quintessential travel companion.

The Long-Term Vision for eSIM and Global Connectivity

The ultimate vision for eSIM and global connectivity is a truly borderless experience. Imagine a future where:

• Universal Profiles: A single eSIM profile could potentially adapt to different regions and carriers automatically, negotiating the best rates and connections on the fly, eliminating the need to purchase region-specific plans.
• Satellite Integration: With services like Apple's Emergency SOS via Satellite already in place, future iPhones could seamlessly switch between terrestrial eSIM data and low-earth orbit (LEO) satellite data (e.g., Starlink, Project Kuiper), offering true global coverage even in the most remote locations. This could mean basic data connectivity in areas currently served only by high-frequency bands like 700MHz (Band 28) or 800MHz (Band 20), which still have coverage gaps.
• Dynamic Band Switching: iPhones could dynamically switch between different frequency bands (e.g., moving from congested n78 5G to less congested B7 LTE) based on real-time network conditions to ensure optimal performance without user intervention.

While some of these are still on the horizon, the foundation laid by current eSIM technology on iPhones is paving the way for a future where staying connected abroad is as effortless as using your phone at home. The days of struggling with local SIM cards are rapidly becoming a distant memory for iPhone users, ensuring that your focus remains on the journey, not the connectivity.

Frequently Asked Questions

Can I use two eSIMs at the same time on my iPhone?

Yes, on US models of iPhone 13, 14, and 15, you can have two eSIMs active concurrently. For non-US models, you can typically use one physical SIM and one eSIM simultaneously. You can store multiple eSIM profiles on your device, switching between them as needed.

Do I need Wi-Fi to activate an eSIM on my iPhone?

Yes, a stable Wi-Fi connection is required to download and provision the eSIM profile onto your iPhone. Once installed, the eSIM will use cellular data, but the initial setup needs Wi-Fi for the download process.

What if my travel eSIM doesn't show a data connection?

First, ensure 'Data Roaming' is enabled for your travel eSIM in Cellular settings, as many global eSIMs operate as MVNOs. Then, try restarting your iPhone, toggling Airplane Mode, or manually selecting a network operator. Check your eSIM provider's documentation for specific APN settings, though these are usually automatic.

Will my home number still work for calls and texts with a travel eSIM?

Yes, with an iPhone's Dual SIM capability, you can keep your home number active for calls and texts while using your travel eSIM for data. You can enable Wi-Fi Calling for your home number to make calls without roaming charges when connected to Wi-Fi abroad.

Are eSIM speeds guaranteed to be fast abroad?

No, data speeds are not guaranteed and depend on local network infrastructure, congestion, and your iPhone's hardware. While eSIMs allow access to 4G LTE and 5G, actual speeds can vary from 20-500 Mbps download. Use speed test apps to benchmark performance in different locations.

Can I transfer an eSIM from one iPhone to another?

Some carriers and eSIM providers support eSIM Quick Transfer in iOS, allowing you to move an eSIM between iPhones digitally. However, this feature's availability varies by carrier and region. For Cellesim, you would typically reinstall the eSIM profile on the new device, often requiring a new QR code scan or manual entry.

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