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eSIM

An eSIM (embedded Subscriber Identity Module) is a digital SIM technology standardized by the GSMA that embeds a programmable chip directly into devices, enabling remote over-the-air provisioning and switching of mobile network operator profiles without requiring a physical SIM card.^[1] The GSMA published the first eSIM specifications for machine-to-machine (M2M) communications in 2013 (SGP.02), with the concept's development beginning around 2010. Consumer-focused standards (SGP.22) followed in 2016, enabling commercial launches that year.^[2]^[3] This evolution replaced traditional removable SIM cards—introduced in 1991—with a secure element that maintains equivalent authentication security while allowing multiple profiles to be stored and activated on a single device, though only one profile is active at a time.^[1] Key benefits for consumers include simplified device setup without physical SIM insertion or replacement, reduced risk of loss or damage to cards, and seamless operator switching for travel or service changes; for operators, eSIM facilitates faster activations, lower distribution costs for physical cards, and expanded market reach through digital onboarding.^[4]^[5] eSIM adoption has accelerated across consumer and IoT sectors, with global smartphone connections at 3% in 2024 but projected to grow rapidly from 2026 due to eSIM-only devices and fixed-wireless access applications.^[6] Use cases span smartphones, tablets, wearables, laptops, and connected vehicles for consumers, while in IoT it supports remote provisioning for constrained devices like sensors and meters under specifications such as SGP.32 (released in 2023).^[7]^[8] As of October 2025, the ecosystem has reached critical mass, with more than two-thirds of mobile network operators worldwide (over 500) supporting eSIM and manufacturers like Apple and Samsung integrating it as standard in flagship models.^[9]

Definition and Technology

Definition

An embedded SIM (eSIM) is a form of SIM card integrated directly into a device's hardware as a programmable chip, known as the embedded Universal Integrated Circuit Card (eUICC), rather than a removable physical card. This technology, defined by the GSMA, allows a SIM profile to be securely downloaded into a permanently embedded secure element within the device, providing security equivalent to traditional removable SIM cards.^[1] The core function of an eSIM is to enable remote provisioning of carrier profiles through software, facilitating network authentication and secure connectivity without requiring physical insertion or replacement of a SIM card. As a digital SIM, it serves as a secure storage for subscriber data and applications, using cryptographic features like secure CPUs and dedicated memory to protect against unauthorized access and ensure reliable mobile network operations.^[10] A key concept of eSIM technology is its ability to store multiple operator profiles on the device simultaneously—typically 5 to 15 depending on the eUICC implementation—and to switch between them digitally via remote management, with only one profile active at a time. This capability builds on earlier machine-to-machine (M2M) applications introduced by the GSMA around 2010, with the first consumer release occurring in March 2016 through standardized specifications for mobile devices.^[1]^[11]^[12]

Technical Components

The eUICC, or embedded Universal Integrated Circuit Card, forms the foundational hardware component of eSIM technology, serving as a reprogrammable secure chip soldered directly onto the device's motherboard to replace traditional removable SIM cards. Compliant with the GSMA-defined MFF2 (M2M Form Factor 2) standard, the eUICC adopts a compact, standardized physical layout—measuring approximately 5mm x 6mm—that facilitates integration into diverse devices ranging from smartphones to IoT modules, ensuring durability and resistance to environmental factors without the need for physical insertion slots.^[3]^[13] At its core, the eUICC includes a Secure Element, a tamper-resistant hardware enclave that safeguards sensitive data such as cryptographic keys and subscriber identities, performing real-time authentication and encryption operations to maintain network security equivalent to physical SIMs. The broader eSIM architecture relies on the Remote SIM Provisioning (RSP) system, which enables dynamic profile management without device disassembly. For consumer applications under GSMA SGP.22, the key RSP entity is the Subscription Manager Data Preparation Plus (SM-DP+), which integrates profile generation, encryption, preparation—including the International Mobile Subscriber Identity (IMSI), Ki authentication key, and OPC operator variant algorithm configuration field—and secure routing to the eUICC, while managing profile lifecycles (e.g., download, enable, disable) and ensuring interoperability across operators via certified secure channels. In contrast, earlier M2M standards like SGP.02 use separate SM-DP and SM-SR entities. These components provide a standardized framework for secure, remote operations.^[1]^[14]^[13] The profile download process in eSIM begins with user or device-initiated activation, often via scanning a QR code provided by the operator or entering details through a dedicated app on the device (part of the Local Profile Assistant or LPA), which encodes the SM-DP+ address and activation code to establish a secure session. This triggers an over-the-air (OTA) transfer, where the SM-DP+ encrypts the profile data—using public key infrastructure with elliptic curve cryptography for certificates and derived symmetric keys for protection—and delivers it directly to the eUICC over protected IP-based interfaces (e.g., ES9+ between the LPA and SM-DP+ for mutual authentication), ensuring the IMSI, authentication keys, and related credentials are installed without exposure to man-in-the-middle attacks. Once downloaded and verified, the profile can be enabled, allowing immediate network attachment.^[3]^[13]^[14] A defining aspect of eSIM is the eUICC's multi-profile capability, which permits the secure storage of multiple (typically 5–15) operator profiles in dedicated memory partitions, enabling users to switch between them—such as for international travel or multi-operator support—via software commands without hardware modifications. Profile switching involves the SM-DP+ (for consumer) coordinating disable/enable actions, updating the active IMSI and keys atomically to minimize service disruption, all while maintaining isolation between profiles to prevent cross-contamination of credentials. This flexibility is integral to the RSP architecture defined in GSMA standards.^[1]^[13]

History

Early Development

The concept of the embedded SIM (eSIM) was first introduced by the GSMA in November 2010 as a solution for machine-to-machine (M2M) applications, aiming to overcome the challenges posed by physical SIM cards in remote or hard-to-access devices, such as those in connected infrastructure.^[15] This initiative addressed limitations like the difficulty of physically swapping or installing traditional SIMs in locations like utility meters or vehicle systems, where remote management was essential for scalability and efficiency in emerging connected ecosystems.^[15] In response, the GSMA formed a task force comprising major mobile operators, including AT&T, China Mobile, and Deutsche Telekom, to explore technical requirements and evolve existing SIM provisioning mechanisms into a programmable, remotely activatable alternative.^[15] By 2012, the focus had sharpened on specific M2M use cases, particularly automotive applications like in-vehicle navigation and telematics, as well as smart metering for energy management, where the embedded approach promised enhanced security and flexibility without mechanical intervention.^[15] This work laid the groundwork for industry-wide adoption, with the first GSMA Embedded SIM specification for M2M published in December 2013 and initial deployments expected in 2014.^[16] The early development of eSIM also involved close collaboration between the GSMA, the European Telecommunications Standards Institute (ETSI), and the 3rd Generation Partnership Project (3GPP) to establish foundational technical specifications for the embedded Universal Integrated Circuit Card (eUICC).^[17] These efforts built on the progressive miniaturization of physical SIM form factors—from full-size to mini, micro, and nano variants standardized over the prior decades—to propose a fully integrated digital solution that eliminated the need for removable cards altogether. This shift prioritized remote provisioning capabilities, enabling over-the-air profile management while maintaining compatibility with existing cellular network authentication protocols.^[17]

Key Milestones

In 2016, the GSMA released the first consumer eSIM specifications, including SGP.21 version 1.0 for the remote SIM provisioning (RSP) architecture and SGP.22 version 1.0 for the technical specification, enabling remote provisioning in mobile devices.^[18] This marked a pivotal step toward enabling seamless carrier switching without physical SIM cards. The same year saw the first commercial eSIM deployment in a consumer device, the Samsung Gear S2 Classic 3G smartwatch, paving the way for broader integration in wearables and later smartphones.^[19] The period from 2018 to 2020 witnessed significant adoption in flagship smartphones and wearables. In September 2018, Apple introduced eSIM support with the iPhone XS and iPhone XS Max, allowing dual SIM functionality through one physical SIM and one eSIM for the first time in iPhones.^[20] This innovation expanded to other models and was complemented by eSIM integration in the Apple Watch Series 4, enabling independent cellular connectivity without an iPhone nearby.^[21] By 2020, Samsung further accelerated consumer rollout with eSIM support in the Galaxy S20 series, which became one of the first widely available Android smartphones to offer dual SIM via eSIM and physical SIM, enhancing global travel and multi-carrier use.^[22] In 2023, the GSMA advanced eSIM for the IoT sector by publishing SGP.32 version 1.0 in May, introducing a dedicated architecture for remote provisioning in low-power, massive-scale IoT deployments such as smart meters and connected vehicles.^[23] This specification addressed limitations of earlier M2M standards, supporting more efficient over-the-air updates and scalability for billions of devices. By 2025, eSIM adoption in Android devices reached a tipping point, with Google making the Pixel 10 series eSIM-only in the US market, eliminating physical SIM slots to streamline design and promote digital provisioning.^[24] This shift reflected widespread industry momentum, as global eSIM-enabled device shipments exceeded 544 million units annually, driven primarily by smartphone growth in regions like China and Europe.^[25]

Standards and Specifications

GSMA Consumer Standards

The GSMA's SGP.22 specification outlines the technical architecture for Remote SIM Provisioning (RSP) in consumer eSIM devices, such as smartphones and tablets, enabling end-to-end management of network operator profiles.^[26] It defines the processes for secure profile download, installation, enabling, disabling, deletion, and overall lifecycle management, ensuring interoperability across devices, networks, and service providers.^[26] This architecture supports user-initiated provisioning, where consumers can remotely switch profiles without physical SIM swaps, facilitating global roaming and operator flexibility.^[5] Key components include the Subscription Manager Data Preparation Plus (SM-DP+), which handles secure preparation and delivery of encrypted profiles to the embedded Universal Integrated Circuit Card (eUICC) in the device.^[26] The Subscription Manager Secure Routing (SM-SR) manages secure communication sessions and routing between the device and provisioning systems.^[26] Consumer devices must support storage and management of multiple profiles, with the specification requiring compatibility for at least several profiles to enable seamless switching.^[3] Compliance with SGP.22 is enforced through the GSMA's eSIM Compliance Process, detailed in SGP.24, which mandates testing for security, functionality, and interoperability.^[27] Testing follows SGP.23 specifications, covering RSP operations like profile handling and mutual authentication, with certification required for eUICCs, SM-DP+, SM-SR platforms, and devices to enter the ecosystem.^[3] The Global Certification Forum (GCF) accredits test labs to perform these evaluations, ensuring certified products meet GSMA security profiles like SGP.25.^[27] SGP.22 specifications are maintained in parallel version tracks, with v2.6.1 (April 2025) and v3.1 (December 2023) both active. SGP.22 v3.1 builds on prior iterations by enhancing support for 5G networks through improved provisioning efficiency and introducing Multiple Enabled Profiles (MEP) for multi-SIM orchestration, allowing simultaneous use of multiple active profiles on a single eUICC.^[26] These updates enable advanced features like dual-connectivity scenarios without compromising security or performance.^[26]

GSMA IoT Standards

The GSMA has developed specialized standards for eSIM in IoT environments to address the unique constraints of non-consumer devices, such as limited user interfaces, network bandwidth, and power resources, enabling scalable remote provisioning across massive deployments.^[28] These standards, distinct from consumer-focused specifications, prioritize automation and efficiency for applications requiring global connectivity without human intervention. The SGP.31 specification, titled "eSIM IoT Architecture and Requirements," outlines the foundational requirements for remote provisioning of embedded Universal Integrated Circuit Cards (eUICCs) in network-constrained and user-interface-constrained IoT devices. Released initially in April 2022 and updated to version 1.2 in April 2024, it defines key use cases including smart meters for utility monitoring and vehicles for telematics and fleet management.^[28]^[28] The architecture emphasizes end-to-end security and interoperability, introducing the eSIM IoT Remote Manager (eIM) as a centralized component for profile management, which supports protocols like CoAP over UDP/DTLS for low-power wide-area networks (LPWAN).^[28]^[29] Building on SGP.31, the SGP.32 "IoT RSP Technical Specification," released in May 2023 as version 1.0 and progressed to version 1.2 by June 2024, provides the detailed technical framework for remote SIM provisioning (RSP) in IoT eSIMs. It enables lightweight, zero-touch provisioning optimized for billions of devices by minimizing signaling overhead and supporting non-interactive profile downloads, particularly suited to low-bandwidth environments like NB-IoT.^[30]^[31]^[7] The architecture incorporates secure bootstrapping via a bootstrap profile that includes a cipher key (CK) alongside authentication and integrity keys, allowing initial secure connections without user involvement and differing from consumer standards by permitting single-profile installations and flexible eIM configurations during manufacturing or in-field deployment.^[32]^[29] For compliance, SGP.32 introduces simplified certification processes under the GSMA's Security Assurance Scheme (SAS), facilitating mass deployment by streamlining accreditation for eIM and related components, with reduced testing requirements compared to consumer eSIM variants. In 2025, the GSMA began issuing certifications under SAS for SGP.32 components, with the first eIM accreditations achieved in January.^[33]^[34]^[35]

Advantages and Disadvantages

Advantages

One of the primary advantages of eSIM technology is its convenience for users, particularly in enabling remote carrier switching without the need for physical SIM card swaps. This over-the-air provisioning allows individuals to download and activate new operator profiles directly on their device, eliminating visits to stores or manual insertions.^[36] For travelers, this facilitates instant access to local data plans, reducing downtime and simplifying connectivity abroad.^[37] eSIM also offers significant space and design benefits for device manufacturers. By embedding the SIM functionality as a small chip directly into the device, it eliminates the need for a physical SIM tray or slot, freeing up internal space that can be allocated to larger batteries, improved cameras, or other components.^[36] This enables the creation of slimmer profiles, particularly in wearables and compact gadgets, where every millimeter counts for ergonomics and portability.^[38] The technology supports multi-profile storage on a single embedded Universal Integrated Circuit Card (eUICC), allowing devices to hold several operator plans simultaneously for easy switching. According to GSMA specifications, this can accommodate multiple profiles—typically five or more—enabling seamless international roaming or dual-SIM functionality without additional hardware.^[39] Only one profile is active at a time, but users can download, store, and manage others remotely, enhancing flexibility for frequent travelers or those using multiple services.^[40] From an environmental perspective, eSIM reduces plastic waste associated with traditional SIM card production and disposal. By going fully digital, it eliminates the manufacturing of billions of physical cards annually, which contribute to e-waste through materials like PVC and metals.^[1] Industry estimates indicate that physical SIMs generate over 18,000 tons of plastic waste each year globally, a figure eSIM deployment helps mitigate by minimizing packaging, shipping, and landfill contributions.^[41] For carriers and manufacturers, eSIM delivers cost savings through streamlined logistics and faster activation processes. Remote provisioning cuts expenses related to SIM card production, distribution, and inventory management, while quicker profile downloads reduce customer churn by enabling near-instant service onboarding.^[42] These efficiencies also lower operational overheads, such as after-sales support for lost or damaged cards.^[43]

Disadvantages

Despite widespread adoption, eSIM technology faces limitations in compatibility, as not all devices and carriers fully support it in 2025. While eSIM support in Android began with devices like the Google Pixel 2 in 2017, many older models, budget devices from manufacturers like Motorola and some Xiaomi models, and certain regional variants lack eSIM hardware, restricting users to physical SIMs.^[44] Similarly, some carriers in rural or developing regions, including select networks in the United States and Asia, have not yet implemented eSIM provisioning due to infrastructure constraints, leaving users without seamless connectivity options.^[45] Additionally, regional variations persist; although iPhones sold in mainland China, Hong Kong, and Macao historically excluded eSIM capability to comply with local regulations, as of 2025, newer models like the iPhone Air support eSIM.^[46] Activation of eSIM profiles presents hurdles that can frustrate users, primarily requiring a stable internet connection for downloading and provisioning, which may fail in areas with poor Wi-Fi or cellular coverage. Common issues include QR code errors, such as invalid or expired codes due to prior use or incomplete installation attempts, leading to messages like "This code is no longer valid."^[47] App glitches or outdated device software can also prevent successful activation, with carriers imposing limits on simultaneous eSIM profiles per device, exacerbating the problem during setup.^[48] These technical barriers often necessitate contacting carrier support, delaying connectivity compared to the plug-and-play nature of physical SIMs.^[49] eSIM introduces risks of vendor lock-in, as transferring profiles between ecosystems like Apple iOS and Android, while improved with features in iOS 26, can still be challenging and is not universally supported across all carriers and devices. While intra-platform transfers are feasible—such as from one iPhone to another via Quick Start—cross-platform moves require deleting the profile on the old device and requesting a new one from the carrier, which may not always succeed due to compatibility mismatches or carrier restrictions.^[50] Some carriers lock eSIM profiles to specific devices or vendors, complicating switches from iPhone to Android and potentially forcing users to start fresh with a new number or plan.^[51] The integration of eUICC chips in devices contributes to higher initial manufacturing costs due to the more complex embedded hardware compared to traditional SIM slots.^[52] This premium persists until production scales, making eSIM-enabled devices slightly more expensive for manufacturers and, by extension, consumers, particularly in cost-sensitive markets like IoT and entry-level smartphones.^[53] Backup and recovery pose significant issues for eSIM users, as profiles are tied exclusively to the device and cannot be stored offline or across multiple gadgets like physical SIMs. If a device is lost or reset from backup, the eSIM is typically deleted, requiring full re-provisioning through the carrier, which involves verifying identity and waiting for a new QR code or activation code— a process that can take hours or days.^[54] This vulnerability contrasts with physical SIMs, which can be easily swapped into a replacement device without reprovisioning.^[55]

Adoption and Applications

Consumer Devices

In consumer devices, eSIM technology has achieved significant dominance in smartphones, accounting for 74% of all eSIM-enabled device shipments in 2025, totaling approximately 403 million units.^[56] Leading models include Apple's iPhone 14 and subsequent series, which are mandatory eSIM-only in the United States without a physical SIM tray, and Google's Pixel 8 and later models, which support eSIM alongside physical SIM options.^[57]^[58] This shift facilitates seamless carrier switching and multiple profiles, enhancing user flexibility in personal communication devices. eSIM adoption extends to wearables and tablets, enabling standalone cellular connectivity without reliance on paired smartphones. Apple's Watch Series 4 and later GPS + Cellular models incorporate eSIM for independent calls, messaging, and data access, while Samsung's Galaxy Watch series, including recent iterations, supports eSIM activation for similar functionality.^[59]^[60] Tablets such as cellular-enabled iPads and Samsung Galaxy Tabs also leverage eSIM for on-the-go productivity, though smartphones remain the primary driver of consumer eSIM integration. The travel sector has seen a notable boom in eSIM usage, with mobile network operators (MNOs) launching data-only plans in 2025 to cater to international roamers, exemplified by services covering over 200 destinations.^[61] eSIM smartphone connections are expected to reach 1 billion globally by the end of 2025, representing about 13% of total smartphone connections.^[62] Regional variations are pronounced, with over 90% of flagship smartphones in the US and EU supporting eSIM, compared to slower uptake in Asia where physical SIM preferences persist due to regulatory and market factors.^[63]^[64]

IoT and Enterprise

eSIM technology has found extensive application in Internet of Things (IoT) environments, particularly in machine-to-machine communications where remote provisioning and flexibility are essential. In smart metering, eSIM enables seamless connectivity for utilities, allowing devices to automatically select optimal networks and reduce installation times by eliminating physical SIM handling.^[65] ABI Research projects that 140 million eSIM-enabled IoT devices, including those for smart meters, will ship in 2025, supporting widespread deployment in energy management systems. Automotive telematics represents another key use case, where eSIM facilitates real-time vehicle tracking, diagnostics, and over-the-air updates in connected cars, enhancing fleet operations across global networks.^[66] Industrial sensors, such as those used in manufacturing and smart cities, leverage eSIM for reliable data transmission from remote or harsh environments, including asset trackers in shipping containers.^[67] For enterprises, eSIM offers significant benefits in managing large-scale deployments, particularly through centralized platforms that enable remote profile switching and monitoring of device fleets. This capability is crucial for 5G private networks, where eSIM allows secure, direct connections for industrial applications without the vulnerabilities of physical SIMs, such as corrosion or loss.^[68] By reducing the need for physical SIM distribution and replacement, eSIM cuts logistical costs and deployment times in remote areas, significantly lowering expenses for global operations.^[69] These advantages streamline connectivity for business-critical systems, enabling faster scalability and improved operational efficiency.^[70] The adoption of eSIM in IoT is accelerating alongside the broader expansion of connected devices, with projections estimating 21.1 billion connected IoT devices globally in 2025, growing at a compound annual growth rate (CAGR) of approximately 13% through 2030.^[71] eSIM contributes to this growth by simplifying provisioning and enhancing interoperability, expected to account for a growing share of cellular IoT connections by 2025.^[72] Practical examples include logistics trackers that provide real-time visibility into shipments, optimizing supply chains through automated network switching, and healthcare monitors that enable continuous remote patient data collection via cellular connectivity.^[73] These applications demonstrate eSIM's role in driving efficient, scalable IoT ecosystems. eSIM's scalability is further enhanced by the GSMA's SGP.32 specification, which supports the management of billions of low-power devices by introducing lightweight provisioning protocols tailored for constrained environments.^[74] This standard reduces data overhead and power consumption, making it suitable for massive IoT deployments like sensor networks that operate on limited bandwidth and energy.^[75] Through features like the eSIM Inventory Manager (eIM), SGP.32 enables large-scale remote updates, ensuring long-term viability for low-cost, battery-operated devices in enterprise settings.^[29]

Implementation and Compatibility

Device and Carrier Support

In the device ecosystem, eSIM support has become widespread across major platforms by 2025. All iPhone models from the iPhone XS and iPhone XR (released in 2018) onwards incorporate eSIM functionality, enabling dual-SIM capabilities alongside physical nano-SIM slots in most regions.^[76] For Android devices, eSIM is standard in the majority of flagship models, including the Google Pixel series from the Pixel 2 (2017) onwards, with full support from the Pixel 3 (2018) and Samsung Galaxy S20 series (2020) onward, the majority of premium Android smartphones featuring the technology to facilitate seamless carrier switching.^[77] Beyond smartphones, eSIM extends to laptops and tablets, such as the Microsoft Surface Pro X and later models in the Surface lineup, which integrate eSIM for cellular connectivity without requiring physical SIM insertion.^[76] Carrier support for eSIM has expanded globally, with over 600 mobile network operators (MNOs) offering the service across over 190 countries and regions as of October 2025.^[9]^[78] Leading providers include AT&T, Verizon, and T-Mobile in the United States; Vodafone in the United Kingdom, Australia, and parts of Europe; and Orange in France and other markets, all enabling eSIM activation for postpaid, prepaid, and international roaming plans.^[79] However, adoption remains uneven, with significant gaps in developing markets in Africa and parts of Asia, where infrastructure limitations and reliance on physical SIMs persist despite growing smartphone penetration.^[9] Compatibility checks for eSIM provisioning rely on specialized databases like DeviceAtlas, which provides real-time device intelligence to verify hardware support, identify eSIM-capable models, and ensure secure profile downloads during activation.^[80] In the United States, the Federal Communications Commission (FCC) mandates that all wireless service providers, including those offering eSIM-only services, file Form 855 for hearing aid compatibility certifications, ensuring accessibility compliance for eSIM-enabled devices.^[81] Most eSIM-enabled devices maintain backward compatibility with physical SIM slots, allowing users to insert traditional nano-SIM cards as a fallback option, particularly in regions where eSIM carrier support is limited.^[82] This hybrid approach supports up to eight or more eSIM profiles stored digitally while accommodating one physical SIM, ensuring flexibility for global travelers and multi-line users.^[83]

Challenges

One major challenge in eSIM deployment is interoperability between devices, carriers, and management platforms, where profile mismatches and varying standards can lead to connectivity failures during remote provisioning. The GSMA's SGP.32 specification aims to address these barriers by enhancing compatibility for scalable IoT and consumer applications, yet ongoing testing in sectors like automotive reveals persistent gaps in ensuring seamless global operation.^[84]^[85] Management of eSIMs introduces significant complexity, particularly in integrating the Subscription Manager Data Preparation (SM-DP+) for profile creation and the Subscription Manager Secure Routing (SM-SR) for delivery and lifecycle management, which often requires extensive engineering and interoperability testing. In enterprise environments, bulk provisioning for IoT devices—such as those in remote or hard-to-access locations—poses additional hurdles, as physical SIM swaps are impractical, and earlier eSIM models demanded tightly coupled components that increased implementation time and costs from weeks to months. The GSMA's newer specifications like SGP.31 and SGP.32 mitigate some of these issues by simplifying remote SIM provisioning for low-power devices, but adoption remains limited to resource-rich organizations.^[86]^[7] Regulatory hurdles vary widely across regions, complicating global eSIM rollout and requiring compliance with diverse telecom, security, and data protection laws. In the European Union, the General Data Protection Regulation (GDPR) imposes stringent requirements on data handling and privacy for eSIM profiles, while some countries mandate local carrier activation to ensure sovereignty. In contrast, India faces slower eSIM integration due to policy gaps and challenges in applying existing foreign SIM regulations to IoT and M2M applications, leading to consultations by bodies like the Telecom Regulatory Authority of India (TRAI) on harmonizing rules. These discrepancies can delay cross-border deployments and increase operational costs for multinational providers.^[87]^[88] User experience during eSIM activation often suffers from the need for a stable Wi-Fi or internet connection to download profiles, with common errors such as "profile not downloadable" arising from poor network coverage, locked devices, or inactive data plans. Troubleshooting typically involves verifying device compatibility, rebooting, resetting network settings, or updating software, but these steps can frustrate non-technical users, especially travelers switching carriers abroad. Providers recommend ensuring roaming is enabled and contacting support for reissuance of QR codes if initial attempts fail.^[89] In 2025, supply chain delays for eUICC chips have intensified amid the IoT surge, with long lead times stemming from the need for provisioning at certified sites and logistical forecasting challenges. The development of In-Factory Profile Provisioning (IFPP) under GSMA's SGP.41 and SGP.42 specifications seeks to alleviate these by enabling profile setup during manufacturing, though full adoption may lag until 2026, impacting sectors like logistics and healthcare where eSIM connections are projected to grow rapidly.^[90]

Security and Privacy

Security Features

The eSIM technology incorporates robust physical security measures due to its embedded nature within the device's hardware. Unlike traditional removable SIM cards, the eUICC (embedded Universal Integrated Circuit Card) chip is soldered directly onto the device's printed circuit board, making it impossible to physically extract or swap without specialized tools and risking device damage.^[91] This design significantly reduces risks associated with theft or loss of physical SIMs, as the eSIM cannot be easily removed or tampered with by unauthorized parties.^[92] The GSMA specifications ensure that this embedded architecture maintains an equivalent level of protection to physical SIMs while enhancing resilience against environmental factors like vibrations and extreme temperatures.^[36] Over-the-air (OTA) provisioning of eSIM profiles relies on strong encryption protocols to secure data transmission and storage. The process utilizes Public Key Infrastructure (PKI) for mutual authentication between the device and the subscription manager, employing digital certificates issued under GSMA root certification authorities.^[93] Encryption is implemented with Advanced Encryption Standard (AES)-256 for protecting profile data during download and management, ensuring confidentiality against interception.^[94] Additionally, individual profiles are safeguarded by a device-specific PIN or password, which must be entered to enable or switch profiles, adding a layer of user-controlled access.^[95] Authentication mechanisms in eSIM are aligned with GSMA standards to prevent unauthorized access to the eUICC. Secure boot processes verify the integrity of the eUICC firmware and operating system at startup using cryptographic signatures, ensuring that only trusted code executes.^[95] Profile isolation further enhances this by segregating multiple stored profiles within the eUICC's secure memory, preventing one profile from accessing or interfering with others, even if a vulnerability affects a single profile.^[96] To combat cloning attempts, eSIM employs a unique eUICC Identifier (EID), a 32-digit hexadecimal value permanently tied to the hardware during manufacturing and certified by GSMA.^[97] This EID serves as a tamper-evident anchor for all provisioning operations, making duplication infeasible without replicating the physical chip. In cases of compromise, GSMA's certification infrastructure supports revocation of affected profiles or certificates through the Subscription Manager, allowing remote disabling to mitigate risks.^[98] As of 2025, enhancements to eSIM security include integration with biometric authentication for profile management. Devices now support fingerprint or facial recognition to authorize profile switching or activation, reducing reliance on PINs and providing a more seamless yet secure user experience, as seen in regulatory mandates like Indonesia's biometric eSIM registration requirements.^[99]^[100]

Concerns and Risks

One significant concern with eSIM technology stems from its vulnerability to hacking, particularly remote attacks targeting the Subscription Manager Data Preparation (SM-DP) systems used for profile provisioning. In 2025, researchers disclosed exploits in eUICC cards, such as those from Kigen, that allow attackers to install malicious JavaCard applets after initial physical access to extract keys, enabling subsequent over-the-air (OTA) cloning of eSIM profiles and eavesdropping on communications.^[101]^[102] These flaws, affecting billions of IoT devices, permit profile duplication without detection, potentially compromising user identity and network access.^[101] Phishing attacks exploiting eSIM activation processes have also been reported in 2025, with scammers impersonating carriers to obtain authorization codes or QR codes for unauthorized profile downloads. The Indian Cybercrime Coordination Centre documented cases in August 2025, including incidents in Noida and Mumbai where victims lost significant sums after falling for fake activation links sent via WhatsApp or calls, leading to SIM hijacking and OTP theft.^[103] Privacy risks arise from the eSIM's core identifiers, such as the eUICC Identifier (EID), a globally unique ID tied to the device that facilitates profile management but enables persistent tracking if leaked or exposed during provisioning. Centralized eSIM provisioning through SM-DP+ servers exacerbates these issues, as opaque operations by resellers and carriers can lead to unauthorized data access or interception, raising concerns about potential exploitation by data brokers without sufficient user oversight.^[104] Malware poses another threat, as device compromise—via infected apps or exploits—allows attackers to manipulate eSIM profiles remotely, such as through memory exhaustion attacks or unauthorized downloads, without the physical isolation provided by removable SIM cards. Unlike traditional SIMs, eSIMs' embedded nature means they cannot be easily extracted or swapped in emergencies, amplifying the impact of such digital intrusions.^[105]^[104] Regulatory inconsistencies further heighten these risks, with global privacy laws varying widely—such as the stringent requirements under the EU's GDPR for data handling versus more lenient frameworks in other regions—leaving gaps in eSIM profile protection and reseller accountability. SIM swap fraud has evolved to target eSIMs through digital means like phishing, with overall incidents surging (e.g., a 1,055% increase in UK reports from 2023 to 2024), adapting traditional tactics to exploit remote activation without uniform international safeguards.^[104]^[106] While built-in protections like encryption mitigate some threats (as detailed in Security Features), reported eSIM-specific security incidents in 2025 remain relatively low compared to physical SIM fraud, with no evidence of widespread profile cloning despite disclosed vulnerabilities; however, rising adoption—projected to reach 50% of global smartphones—could amplify exposure as attack surfaces expand.^[104]^[107]

Future Developments

Emerging Trends

eSIM technology is increasingly integrating with 5G standalone (SA) networks to enable low-latency connectivity for Internet of Things (IoT) applications, supporting massive deployments with ultra-reliable communication. This integration allows eSIM-enabled devices to achieve latencies as low as 1 millisecond, facilitating real-time applications in industrial automation and autonomous systems.^[108]^[109] In enterprise settings, eSIM plays a pivotal role in private 5G networks, providing secure and flexible connectivity for device fleets without physical SIM swaps. For instance, automated eSIM provisioning solutions enable seamless onboarding of laptops and sensors to isolated private networks, enhancing operational efficiency in sectors like manufacturing and logistics.^[110]^[111]^[112] The evolution toward integrated SIM (iSIM), which embeds SIM functionality directly into the device chipset, represents the next generation beyond eUICC-based eSIMs, enabling smaller, more power-efficient IoT devices. iSIM maintains remote provisioning capabilities while eliminating the need for a dedicated chip, improving durability and integration in wearables and sensors. Industry developments in 2025 highlight iSIM's maturation, with standards like GSMA's iUICC advancing its adoption for constrained environments.^[113]^[114]^[115] eSIM ecosystems are expanding into laptops and fixed wireless access (FWA) solutions, where embedded profiles support high-speed broadband without physical infrastructure. Major laptop manufacturers now include eSIM support for global cellular connectivity, allowing users to activate profiles digitally for on-the-go internet access. In FWA, eSIM enables 5G routers to switch carriers dynamically, providing resilient home and enterprise broadband with speeds exceeding 1 Gbps.^[116]^[117]^[118] AI-driven auto-provisioning is emerging as a key innovation, using machine learning to detect device compatibility, predict connectivity needs, and automate profile downloads, minimizing manual intervention in large-scale deployments. This approach streamlines IoT onboarding, with platforms enabling zero-touch activation for vehicles and smart devices across ecosystems.^[119]^[120] Sustainability efforts in eSIM provisioning emphasize reduced environmental impact through digital activation, with GSMA standards for remote SIM provisioning (RSP) enabling greener operations by eliminating physical distribution. eSIM adoption avoids plastic waste from billions of SIM cards and cuts carbon emissions by up to 99% compared to traditional cards, primarily due to no shipping or packaging requirements. For example, public sector transitions to eSIM have demonstrated significant emission reductions alongside cost savings.^[36]^[121]^[122] Global retail for travel eSIM marketplaces is experiencing robust growth, with revenues projected to increase 85% year-over-year in 2025, driven by cost-effective alternatives to traditional roaming. These platforms allow instant profile purchases for international trips, further boosted by smartphone eSIM mandates. Market forecasts indicate this segment will continue expanding, supporting broader eSIM adoption.^[123]^[124]

Market Projections

The eSIM market is projected to see substantial growth in device shipments, with forecasts indicating over 633 million eSIM-enabled devices shipped globally in 2026, driven primarily by smartphone adoption in China and advancements in SGP.32 standards for both consumer and IoT applications.^[125] Of these, approximately 74% are expected to be smartphones, reflecting the segment's dominance in eSIM integration. In parallel, the broader IoT ecosystem is anticipated to expand to 39 billion connected devices by 2030, with eSIM playing a key role in enabling scalable connectivity for industrial and consumer applications.^[71]^[25] Market value for eSIM technology is estimated to reach €12 billion by 2027, up from €7.5 billion in 2023, representing a compound annual growth rate (CAGR) of approximately 25% over this period.^[126] This expansion is fueled by increasing device compatibility and remote provisioning capabilities, which reduce operational complexities for manufacturers and service providers. Global adoption of eSIM in smartphones is forecasted to surpass 50% by 2028, with penetration rates climbing to 57.7% by 2030 as more OEMs prioritize eSIM in new models. In premium devices, eSIM is expected to fully replace physical SIM cards, as evidenced by Apple's transition to eSIM-only iPhones starting in 2022 for the US market and expanding globally thereafter.^[25]^[127] Regionally, China and India are poised to lead the IoT surge, with China alone projected to achieve 1.5 billion eSIM connections by 2030 due to rapid 5G rollout and manufacturing scale. In contrast, the US and EU are anticipated to reach 90% consumer penetration by 2030, supported by high smartphone upgrade cycles and regulatory alignment on eSIM standards.^[128]^[129] The economic impact of eSIM adoption includes significant savings for carriers through eliminated physical SIM distribution and streamlined provisioning processes.^[126] This shift also enables broader revenue opportunities in roaming and IoT services, offsetting initial infrastructure investments.

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Oct 13, 2025 · A report from Juniper Research claims that revenue from travel embedded SIM (eSIM) packages will grow by 85% in 2025.
[122]
Global Travel SIMs & eSIMs Market: Forecast, Share, Size 2025-30
In stockOct 13, 2025 · Global travel eSIM revenue in 2025. $8.7bn. Global travel eSIM revenue in 2030. 380%. Global travel eSIM revenue growth 2025-2030. 2025-2030.
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eSIM-enabled Device Shipments Will Exceed 633 Million in 2026 ...
Sep 16, 2025 · China will soon allow eSIM for domestic use in smartphones—beginning with a pilot scheme from China Unicom—unlocking the last remaining portion ...
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How will eSIM technology shape the future of connectivity? - 1GLOBAL
Sep 5, 2025 · In this article we're exploring the emergent frontiers of eSIM technology, examining how it's reshaping business and leisure, and looking ...
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eSIM Market Size, Share, Growth & Forecast Analysis [2032]
Oct 13, 2025 · The global eSIM market size was valued at $1.22 billion in 2023. & is projected to grow from $1.46 billion in 2024 to $6.29 billion by 2032.
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Global Embedded SIM (eSIM) Market Size - Market Data Forecast
Aug 26, 2025 · As projections, China alone will reach 1.5 billion eSIM connections by 2030. The region's explosion in smartphones, wearables, and IoT ...
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100+ eSIM statistics telecom service providers need to know in 2025
Apr 25, 2023 · By 2023, the European eSIM market generated a revenue of USD 2.57 billion and is projected to grow at a CAGR of 8.3% from 2024 to 2030.Missing: mandates | Show results with:mandates