Best eUICC SIM for IoT Connectivity: Top 5 Options in 2026

TL;DR: eUICC SIM providers manage eSIM profiles over the air for global IoT fleets. Best overall: Flolive; best for developer-led fleets: Hologram; best for multi-network local breakout: Velocity IoT; best for MVNO enablement: Cobira.best eSIM and iSIM OS: Kigen; best for large multi-operator fleets: Thales; best security root of trust: Idemia.

What Are eUICC SIMs? 

eUICC SIMs for IoT connectivity are programmable SIMs that allow multiple carrier profiles to be stored and managed remotely over-the-air (OTA). This technology enables devices to switch carriers remotely to optimize for coverage, manage costs, or adapt to changing business needs. 

For long-lasting IoT devices in the field, EUICC SIMs provide essential flexibility, scalability, and cost savings by reducing downtime and the need for costly technician visits. Devices equipped with eUICCs can be provisioned with profiles for different operators and geographies without truck rolls or manual intervention, streamlining mass IoT rollouts and long-term device lifecycle management.

How an EUICC SIM works:

• Digital profile: It acts like a digital wallet, capable of storing multiple subscriber profiles from different carriers.
• Remote provisioning: The eUICC allows these profiles to be remotely downloaded, updated, or changed without physically accessing the device, using over-the-air (OTA) updates.
• Seamless connectivity: When a device moves to a new region, it can be remotely switched to a local carrier profile for seamless connectivity, assuming the profile already exists on the eUICC. Otherwise, a new profile will first need to be downloaded.

eUICC SIMs for IoT Connectivity at a Glance

The table below summarizes the key differences between the eUICC SIM providers covered in this guide. We explore each of them in more detail in the sections that follow.

Category	Solution	Best For	Key Strengths	Things to Consider
Managed Connectivity Providers	Flolive	Global, carrier-independent IoT control	Owned multi-IMSI-over-eUICC core and white-label CMP	Complex commercial terms; quote-based pricing
eSIM and eUICC Technology and Security Vendors	Kigen	OEMs and module makers building eSIM/iSIM into devices	eSIM and iSIM OS, SGP.32 eIM, Kigen Pulse, in-factory provisioning	Software and OS vendor; needs a connectivity partner for airtime
eSIM and eUICC Technology and Security Vendors	Thales	Enterprises managing large multi-operator IoT fleets	SGP.32 Adaptive Connect, certified eSIM, over-the-air management	Connectivity comes through MNO partners; integration effort
eSIM and eUICC Technology and Security Vendors	Valid	Operators and OEMs needing certified eSIM plus an RSP platform	SAS-certified RSP/SM-DP+, eIM and IPA, Dynamic IMSI	Connectivity via partners; provisioning needs network access
eSIM and eUICC Technology and Security Vendors	Idemia	MNOs and OEMs running secure, massive IoT fleets	DAKOTA eSIM, Smart Connect orchestration, IoT SAFE	Cost and complexity at scale; connectivity via operator partners

How eUICC Works in IoT Deployments 

Digital Profile

An eUICC SIM stores operator profiles as digital files, each holding credentials and access rules for a mobile network. Unlike legacy SIMs locked to a single network, the eUICC can support multiple profiles on the same chip. Each profile can be activated, deactivated, or deleted remotely, allowing operators and enterprises to control connectivity relationships dynamically, based on business requirements, region, or roaming agreements.

The digital profile model gives device owners the flexibility to change mobile providers in response to cost, performance, or coverage changes, without device recalls or onsite interventions. OEMs and IoT service providers can pre-install generic profiles during manufacturing and then remotely assign local carrier profiles post-deployment. This profile portability is crucial for global IoT solutions, reducing time-to-market and adapting to evolving connectivity conditions.

Remote Provisioning

A key feature of eUICC technology is remote provisioning, which allows SIM profiles to be downloaded, activated, or altered securely over-the-air (OTA). Using standard protocols defined by GSMA, businesses or mobile operators can send profile updates to millions of deployed devices without physical touchpoints. 

While earlier GSMA standards such as SGP.02 were designed for traditional M2M use cases, SGP.32 extends remote SIM provisioning specifically for modern IoT deployments, supporting scalable profile management, lower operational overhead, and long-lived devices with limited user interaction This eliminates logistical bottlenecks and accelerates large-scale IoT rollouts, as connectivity can be managed and adjusted as device fleets move or as business needs change.

Remote provisioning supports lifecycle management beyond initial deployment. Enterprises can optimize network costs by switching operators based on bulk deals or local agreements, or update SIM secrets and configurations to counteract potential security threats. OTA provisioning also simplifies regulatory compliance in countries with evolving telecom laws by allowing swift, remote reconfiguration of carrier profiles across distributed devices.

Seamless Connectivity

As devices migrate across regions or providers, eUICCs enable the secure and automatic switching between mobile networks. This reliability is critical for applications such as logistics tracking, mobility services, and cross-border machinery, where sustained access to optimal networks ensures uninterrupted service and efficient data transmission.

The ability to dynamically select the best available operator profile means IoT deployments are no longer limited by single-market agreements or burdened by expensive roaming. Instead, device owners can tailor their connectivity at scale—maximizing uptime, optimizing performance, and driving down costs. This smooth, borderless connectivity empowers manufacturers, enterprises, and service providers to focus on application value rather than managing network logistics.

Notable eUICC SIMs for IoT Connectivity 

How we selected these tools: We shortlisted eUICC SIM providers and technology vendors for IoT based on remote SIM provisioning, multi-IMSI and multi-network switching, global coverage with local breakout, connectivity management platform capabilities, eSIM and iSIM operating systems, and support for current GSMA standards such as SGP.32.

Managed Connectivity Providers

1. Flolive

Best for: Global IoT deployments needing carrier-independent control

Strengths: Owned multi-IMSI-over-eUICC core network with white-label CMP

Things to consider: Commercial terms can be complex; pricing is quote-based

Flolive operates its own cloud-native, globally distributed mobile core network built specifically for IoT, combining a patented multi-IMSI-over-eUICC (eSIM) SIM with local points of presence so traffic can break out regionally for lower latency and in-country compliance. The SIM is offered across removable plastic, embedded MFF2, iSIM and softSIM form factors, and the technology aligns with GSMA Remote SIM Provisioning across M2M, consumer and IoT models, including SGP.32.

Connectivity is run through the Flolive Connectivity Management Platform (CMP), which unifies SIM provisioning, policy enforcement, diagnostics, rating and billing, and lifecycle automation in one interface, with REST APIs for integration. An optional CMP Aggregator lets operators bring SIMs from multiple providers, including SGP.32, under a single pane of glass. The platform serves mobile operators, MVNOs and MVNEs, enterprises and IoT service providers, with white-label and multi-tier options and local IMSIs to address permanent-roaming and data-sovereignty rules.

Key features include:

• Multi-IMSI over eUICC SIM: A single SIM holds multiple IMSIs and applies eUICC standards, so devices can switch network identities automatically based on policy while keeping standards-based remote management. This combines the redundancy of multi-IMSI with the lifecycle flexibility of eUICC across a single global SKU.
• Distributed core network with local breakout: Flolive owns and runs a cloud-native mobile core with local points of presence on multiple continents, so data is processed regionally rather than backhauled. This lowers latency, supports data localization, and lets devices connect to local operators instead of relying on permanent roaming.
• Connectivity Management Platform: The CMP provides real-time SIM status, usage and diagnostics, policy and profile management for roaming, QoS and usage limits, lifecycle automation for activate, suspend and terminate, plus an integrated rating and billing engine and role-based access with audit logs, all reachable through dashboards or REST APIs.
• CMP Aggregator for multi-vendor fleets: An optional single pane of glass unifies SIMs from any provider, including legacy and SGP.32 eSIMs, without replacing existing SIMs. This lets operators manage mixed estates centrally and migrate fleets over time rather than in one cutover.
• Remote SIM Provisioning and SGP.32 support: The platform supports GSMA RSP specifications across M2M, consumer and IoT, including SGP.32, with integrated SM-DP and SM-SR functions. Profiles can be downloaded, enabled, disabled or deleted over the air across deployment models.
• White-label and multi-tier operations: Operators and resellers can brand the platform, segregate usage across customer tiers, and launch IoT services without building new infrastructure, with the license covering the core network, BSS and connectivity management to reduce per-SIM and per-IMSI fees.

Limitations (as reported by users on Gartner Peer Insights):

• Commercial structure: Some reviewers note that commercial and contract terms can be complex, so scoping the engagement with the Flolive team during onboarding helps set expectations.
• Pricing transparency: Public rate cards are not published; prospective buyers engage sales for a tailored quote based on deployment size and usage.
• Best-fit profile: The strength of the offering is an integrated, owned connectivity stack, so teams looking only for a thin SIM-reselling layer may find the full platform broader than they need.

2. Kigen

Best for: OEMs and module makers building eSIM or iSIM into IoT hardware.

Strengths: eSIM and iSIM operating systems, SGP.32 eIM, and Kigen Pulse.

Things to consider: Supplies software and OS, not airtime; needs a connectivity partner.

Kigen supplies the software and operating systems that turn a chip into a SIM, eSIM, or iSIM, rather than selling connectivity itself. Its Kigen OS is a low-footprint SIM stack that runs on any form factor and is built for 2G, 3G, 4G, and 5G networks as well as low-power wide-area networks such as NB-IoT and LTE-M. The eSIM (eUICC) operating system lets a device be manufactured centrally and have an operator profile downloaded over the air once it is deployed, so connectivity does not need to be set at the production line.

Kigen also develops iSIM, which moves SIM functionality from a separate chip into a dedicated, tamper-resistant area on the device system-on-chip alongside the application processor and cellular radio. The company works with chipset vendors, module makers, mobile operators, and OEMs, and builds its products to GSMA and ETSI standards. Its eIM and Kigen Pulse software handle SGP.32 eSIM management, and a Secure with Kigen program tests modules for GSMA compliance.

Key features include:

• Kigen SIM OS: A low-footprint software stack provides SIM functionality on any form factor and is built for 2G, 3G, 4G, and 5G as well as NB-IoT and LTE-M low-power networks for constrained IoT devices.
• eSIM (eUICC) operating system: Devices manufactured without a known operator can download an operator profile over the air after deployment, with multi-network support so profiles can be changed remotely as coverage or commercial needs change.
• iSIM on the system-on-chip: SIM functionality is integrated into a tamper-resistant area of the device chip, removing a separate component, reducing board footprint and power draw, and supporting either a fixed SIM OS or a remotely provisioned eSIM OS.
• Kigen eIM and Kigen Pulse: The eSIM IoT Manager implements the GSMA SGP.32 architecture and, with the Kigen Pulse console and APIs, handles profile download, enabling, switching, and auditing across a fleet, with geo-redundant and hybrid-cloud deployment options.
• Remote SIM provisioning and in-factory provisioning: Kigen provides RSP for M2M, consumer, and IoT devices, plus in-factory profile provisioning that loads an operator profile onto a batch of devices just before shipment, supported by a device C-SDK for integration.
• Secure with Kigen and standards compliance: Products conform to GSMA Remote SIM Provisioning and ETSI SIM specifications, secure enclaves protect credentials, and the Secure with Kigen program tests partner modules against GSMA standards before deployment.

Limitations (based on publicly available sources):

• Security disclosure history: In 2025, security researchers disclosed a vulnerability in a Kigen eSIM operating system test-profile variant that could allow unverified applets to be installed; Kigen issued patches across its products to address it.
• Software and OS model: Kigen provides operating systems and management software rather than network airtime, so a deployment still requires a separate mobile operator or connectivity partner and compatible modules or chipsets.
• SGP.32 maturity: The newer IoT eSIM standard and broad interoperability across the ecosystem are still developing, so early deployments can encounter integration gaps that need additional testing.

3. Thales

Best for: Enterprises managing large IoT device fleets across operators.

Strengths: SGP.32 Adaptive Connect, certified eSIM, and over-the-air management.

Things to consider: Network airtime comes through MNO partners; integration onboarding effort.

Thales provides eSIM and SIM technology for IoT together with platforms to provision and manage connectivity. Its Adaptive Connect solution implements the GSMA SGP.32 standard and combines elements of the consumer and machine-to-machine eSIM concepts, so a single pre-integrated eSIM can be shipped anywhere in the world and then have the correct local connectivity profile activated remotely, with no physical access to the device. The solution uses the eSIM IoT Manager (eIM) software component to handle profile downloads, activation, and deactivation across a fleet.

Operators and enterprises manage connectivity policies, diagnostics, and subscription changes over the air through a single industry-certified interface, and tasks such as switching subscriptions or updating fleet rules can be automated. A separate Instant Connect service provides bootstrap provisioning, where a device ships with an initial profile preloaded so it can connect out of the box and then download a permanent subscription. Thales pairs these platforms with eSIM, industrial SIM, and iSIM hardware that supports strong authentication, encryption, and over-the-air management.

Key features include:

• Adaptive Connect (SGP.32): A single pre-integrated eSIM is shipped globally and the correct local connectivity profile is activated remotely, using the SGP.32 architecture designed for large-scale IoT device populations without physical SIM handling.
• eIM-based profile lifecycle management: The eSIM IoT Manager software component downloads, activates, and deactivates operator profiles on devices in the field, supporting the profile state operations defined by the GSMA IoT eSIM specifications.
• Over-the-air subscription and policy management: Connectivity policies, diagnostics, and subscription changes are managed remotely through one certified interface, and routine tasks such as switching subscriptions or updating fleet rules can be automated.
• Instant Connect bootstrap provisioning: A patented client-server service preloads an initial profile during manufacturing so devices gain connectivity out of the box, then download a permanent operator subscription once activated.
• eSIM, industrial SIM, and iSIM hardware: Thales produces ruggedized SIM, eSIM, and integrated SIM hardware for IoT, supporting strong authentication, encryption, and long device lifecycles across networks from low-power IoT to 5G.
• Security and certification: The eSIM technology carries GSMA eSIM Security Assurance certification and a secure-by-design approach intended to support compliance with evolving IoT cybersecurity regulations across sectors such as automotive, utilities, and healthcare.

Limitations (based on publicly available sources):

• Connectivity through partners: Thales supplies the eSIM technology and management platform, while the actual network airtime is delivered through mobile operator and connectivity partners arranged separately.
• Onboarding and integration effort: Operators must integrate a diversity of eSIM-capable devices with device certification, business support systems, and provisioning processes, which adds setup work before full operation.
• SGP.32 maturity: As a newer standard, interoperability across the wider device and operator ecosystem is still developing, so deployments can require additional validation.

4. Valid

Best for: Operators and OEMs needing certified eSIM plus an RSP platform.

Strengths: SAS-certified RSP and SM-DP+, eIM and IPA, and Dynamic IMSI.

Things to consider: Relies on connectivity partners; provisioning needs network access.

Valid, under its Trusted Connectivity brand, both manufactures eSIMs as a GSMA-accredited eSIM manufacturer and operates the platforms that provision and manage them. Its Remote SIM Provisioning platform is built on a SAS-SM certified SM-DP+ and supports the GSMA SGP.02, SGP.22, and SGP.32 standards, deployable on premises or in the cloud. The company reports more than 130 Remote SIM Provisioning platforms in operation and validated interoperability across 500 mobile operators.

For IoT, Valid offers a full stack that bundles the eSIM or operating system license, the eSIM IoT Remote Manager (eIM), the IoT Profile Assistant (IPA), and the SM-DP+ platform. A Dynamic IMSI application lets a device switch networks using a single operator profile across that operator roaming agreements, and a Multiple Enabled Profiles feature provides dual-SIM behavior on eSIM-only devices. Valid also supplies integrated secure elements and iSIM, and adds value-added provisioning features such as adaptive profiles, fraud prevention, usage restrictions, and smart inventory.

Key features include:

• SAS-certified RSP and SM-DP+ platform: A subscription management data preparation platform creates, downloads, and manages eSIM profiles over the air, supports the SGP.02, SGP.22, and SGP.32 standards, and runs in GSMA-accredited certified data centers on premises or in the cloud.
• eIM and IPA for IoT eSIM: The eSIM IoT Remote Manager controls eSIMs inside IoT devices, while the IoT Profile Assistant, available on the device or within the eSIM operating system, requests and triggers profile downloads under the SGP.32 architecture.
• Dynamic IMSI: A single operator profile lets a device attach to networks across all countries and networks the host operator has roaming agreements with, switching cellular networks without further integration per market.
• Multiple Enabled Profiles and eSIM manufacturing: The MEP feature runs more than one profile at once for dual-SIM behavior on eSIM-only devices, and as an accredited eSIM manufacturer Valid supplies eUICC hardware in form factors that can be plugged in or soldered.
• Value-added RSP features: The platform adds adaptive profile selection by device capability, configurable profile allocation, fraud prevention through device blacklisting, usage restrictions on downloads and transfers, smart inventory with consumption alerts, and an MVNO suite for multi-entity management.
• Integrated secure elements and iSIM: Valid provides integrated secure element and iSIM products for advanced mobile and IoT applications, combining the SIM function with a secure element on the device for smaller, more secure designs.

Limitations (based on publicly available sources):

• Connectivity partner reliance: Valid provides eSIM technology and provisioning platforms, so principal and bootstrap connectivity depend on mobile operator and connectivity partners arranged separately from the platform.
• Provisioning needs network access: Downloading and activating an eSIM profile requires the device to have initial connectivity, which can complicate setup where coverage is weak until a fallback profile is in place.
• Ecosystem complexity: Implementation requires coordination across device makers, operators, and provisioning platforms, and across the separate GSMA specifications for M2M and IoT, which adds integration overhead.

5. Idemia

Best for: MNOs and OEMs running massive, security-sensitive IoT fleets.

Strengths: DAKOTA eSIM, Smart Connect orchestration, and IoT SAFE security.

Things to consider: Cost and complexity at scale; airtime through operator partners.

Idemia provides eSIM, SIM, and iSIM products together with the management platforms behind them, with security positioned as a root of trust for connected devices. Its DAKOTA eSIM IoT range pairs certified hardware with an operating system built for IoT, supports form factors from removable to soldered, and works across networks from NB-IoT to 5G. Device makers can download operator subscriptions over the air and apply an additional security layer through the GSMA IoT SAFE specification, which uses the SIM as a hardware root of trust.

Idemia eSIM IoT manager, branded Smart Connect IoT, is an orchestration layer that handles both the M2M (SGP.0x) and IoT (SGP.3x) eSIM workflows through a single interface, integrates with third-party connectivity management platforms, and runs provisioning campaigns across large eUICC fleets. It includes the SM-DP and SM-SR platforms for M2M and the eIM for IoT profile state management, offers just-in-time profile generation with a single digital ordering mechanism, and is hosted in GSMA SAS-SM certified regions of a public cloud. Idemia also supplies iSIM, ruggedized IoT and 5G SIMs, an IoT OTA platform, and the IoT SAFE solution.

Key features include:

• DAKOTA eSIM IoT range: Certified hardware and an IoT operating system support removable and soldered form factors and networks from NB-IoT to 5G, with operator subscriptions downloaded over the air and operating-system updates supported to extend device life.
• Smart Connect IoT orchestration: An orchestration layer manages eSIM M2M (SGP.0x) and eSIM IoT (SGP.3x) workflows through one interface, integrates with third-party connectivity management platforms, and runs provisioning campaigns across large eUICC fleets.
• SM-DP, SM-SR, and eIM platforms: The solution includes subscription manager data preparation and secure router platforms for M2M profile generation and download, and the eSIM IoT Remote Manager for profile state operations on single devices or whole fleets.
• Just-in-time profile generation: A single digital profile ordering mechanism handles dynamic generation and adaptation of profiles for both M2M and IoT use cases, so devices can connect to an operator network out of the box without manual steps.
• IoT SAFE and root-of-trust security: The SIM, eSIM, or iSIM acts as a hardware root of trust under the GSMA IoT SAFE specification, providing strong authentication and end-to-end encryption of data exchanged between devices and back-end systems.
• iSIM, IoT and 5G SIMs, and OTA platform: Idemia also supplies integrated SIM for space- and power-constrained designs, ruggedized IoT and 5G secure-element SIMs, and an IoT OTA platform that manages the SIM lifecycle of devices remotely.

Limitations (based on publicly available sources):

• Deployment cost and complexity: Industry surveys cited by Idemia note that most mobile operators expect long-term cost and complexity to be the main challenge of eSIM IoT deployment at scale.
• Legacy and new standard management: Running both the M2M (SGP.0x) and IoT (SGP.3x) approaches in parallel adds migration and management overhead, for example where automotive deployments move from one specification to the other.
• Connectivity via partners and interoperability: Idemia supplies technology and platforms while airtime comes through operator partners, and ecosystem interoperability for the newer IoT eSIM standard is still maturing.

Best Practices for Implementing eUICC in IoT Projects 

Design Devices for Multi-Profile Flexibility

Start by architecting devices to handle multiple eUICC profiles and operator changes. This will require hardware and software support for loading, activating, or deactivating several network profiles over the device’s lifecycle. By enabling profile switching, devices can adapt to changing coverage, costs, or regulations over time. Planning for multi-profile support at the hardware and firmware level ensures future-proof scalability, especially for global device fleets that might need to change providers post-deployment.

Integrating multi-profile management minimizes risk. When issues arise with a specific carrier’s service or costs fluctuate, device owners can quickly switch profiles without on-site intervention. This ensures business continuity, reduces operational expenses, and improves resilience against market or regulatory shifts. Multi-profile flexibility is a prerequisite for maximizing the return from eUICC investments in IoT deployments.

Validate Module and Firmware Compatibility Early

Validation must occur at the outset: test your device modules, firmware, and eUICC chips to certify compatibility with GSMA standards and your prospective network operators. Modules from different vendors or firmware versions might handle eUICC processes inconsistently, causing OTA provisioning failures or degraded service. Early testing uncovers these issues before mass deployment, reducing the risk of costly recalls or device rework.

Work closely with your module vendors and eUICC providers to access compatibility matrices and approved software revisions. By simulating remote profile management in the lab and running OTA provisioning scenarios, you ensure smooth scaling to larger field trials. Fixing compatibility problems early in the development cycle averts downstream operational headaches, freeing resources for broader rollout and support.

Build Provisioning Workflows Into Your Device Management Platform

Provisioning should be a fully automated workflow embedded in your device management platform. This involves integrating APIs for remote profile download, activation, and configuration into your existing fleet management systems. Automated workflows allow for batch updates, error handling, and event-based triggers, making operations more efficient and scalable as device counts grow.

Building provisioning into your platform also enables closed-loop processes such as detecting activation failures, retrying deliveries, or alerting support staff about anomalies in real time. Rich workflow automation reduces manual overhead, minimizes human error risk, and supports complex use cases like on-the-fly operator changes or staged project rollouts.

Test Networks Across Regions Before Mass Production

Before scaling production, thoroughly test your device connectivity across all intended deployment regions. Even with eUICC flexibility, local network conditions, operator agreements, and regulatory restrictions can introduce unexpected connectivity gaps or latency issues. Real-world testing confirms whether remote profile downloads, activations, and network handovers work reliably across diverse geographies.

Collaborate with your eUICC provider and local MNOs to ensure that all required profiles are available and function as intended. Use test devices in the field to validate that profile switching occurs seamlessly and that failover to backup carriers is robust. By discovering and resolving regional or carrier-specific issues early, you avoid mass deployment pitfalls and service disruptions.

Maintain Security Controls and Monitor Profile Lifecycle Events

Security for eUICC devices must go beyond the basics. Use strong, standards-based cryptography to secure OTA profile downloads, remote management commands, and profile deletion operations. Enforce access control over who can initiate provisioning or switch profiles, with audit trails to track all lifecycle events. Monitoring profile changes shields your IoT fleet from unauthorized provisioning or potential misuse.

Security best practices also include regular patching of device firmware, blocking downgrades to insecure profiles, and securing device management platforms against external attacks. Continuous monitoring for anomalous or unexpected eUICC events—such as frequent profile activations, suspicious provisioning requests, or unexpected operator changes—enables rapid risk mitigation and regulatory compliance in sensitive IoT environments.

Conclusion

eUICC SIMs are a foundational technology for scalable, global IoT deployments. By enabling remote management of operator profiles, they reduce operational friction, cut connectivity costs, and improve device uptime across regions. For long-lived or widely distributed IoT fleets, adopting eUICC ensures adaptability to changing market conditions, regulatory shifts, and evolving business needs, making connectivity infrastructure more agile and future-ready.