Delivering flexible control and dynamic security over a connected object’s lifetime

The eSIM (embedded SIM), refers to a SIM which is capable of hosting multiple connectivity profiles (as defined by GSMA). It supports secure over-the-air remote SIM provisioning, as well as remote updates to the keys and applications. eSIMs can be either soldered to a device or removeable. 

eSIM is sometimes used interchangeably with the term eUICC (embedded Universal Integrated Circuit Card). There is a difference however, as the eUICC is the platform that can be used to run multiple secure applications.

Worldwide recognition is growing for the unique ability of the eSIM to deliver flexible control and dynamic security over a connected object’s lifetime. The latest view of eSIM shipment volumes, given by Trusted Connectivity Alliance (formerly SIMalliance) in 2023, reveal significant growth in the global adoption of eSIM technology in 2022. Shipments reported by TCA members increased by 13% year-on-year to reach 382 million units, with TCA also estimating the total available market in 2022 at 427 million units.

Flexible, Trusted Connectivity

eSIM provides flexible, trusted connectivity to meet complex logistical needs across various industry verticals. Multiple connectivity profiles, post-issuance personalisation and remote management capabilities simplify supply chains and ease deployment challenges.

Dynamic Security

eSIM technology also addresses security challenges over a connected object’s lifetime. It is based on the most widely distributed secure application delivery platform in the world (UICC/SIM/USIM) and its usage is ruled by interoperable solutions defined across various organisations such as ETSI, GSMA, GlobalPlatform, ISO and Java Card Forum

It is Common Criteria certified and has advanced security and cryptographic features, including a securely designed central processing unit and dedicated secure memory to store operating system programmes, keys and certificate data. This protects devices from various hacking scenarios, such as cloning, physical attacks to a single device, and remote attacks from the internet to numerous devices. 

This functionality is complemented by the ability to perform remote upgrades to sensitive data, apps and subscriptions according to GSMA and GlobalPlatform specifications to immediately respond to emerging threats and attacks once a device is live in the field.

TCA eSIM Interoperability Service

Trusted Connectivity Alliance has launched an eSIM Interoperability Service to promote increased confidence and trust across the eSIM ecosystem.  

Delivered by test solution provider COMPRION, the new service enables mobile and other network operators to test how their eSIM profiles interact with an extensive range of consumer eSIM devices. This will help identify and address individual interoperability and compatibility issues. 

About the TCA eSIM Interoperability Service 

By curating a test portfolio of eSIM devices currently deployed in the market, including smartphones, wearables, tablets and laptops, the TCA eSIM Interoperability Service – delivered by COMPRION – will help operators proactively test their eSIM profiles are interoperable with a wide range of commercially available devices prior to deployment.  

This is particularly beneficial for Tier 2 and 3 operators with more limited resource for comprehensive in-house testing. 

The service is also anticipated to evolve to support additional testing scenarios that will enable eSIM Subscription Management (SM-DP+) providers and eSIM consumer device manufacturers to improve the interoperability and compatibility of their respective services and products.   

Testing can be conducted on a self-serve basis either on-site at COMPRION’s headquarters or remotely. It can also be delivered by COMPRION’s team of experts.  

Promoting an Interoperable eSIM Ecosystem   

This eSIM Interoperability Service reflects TCA’s proven pedigree over decades promoting interoperability across the SIM ecosystem and its ongoing commitment to supporting the development of eSIM technology 

It also complements TCA’s extensive engagement and collaboration with various industry bodies to promote a secure, interoperable and scalable eSIM ecosystem, including GSMA.  


“GSMA is very pleased to see the emergence of a service that promotes interoperability between eSIM hardware, operator profiles and servers. With the emergence of eSIM-only smartphones in some markets, this service is essential for consumer confidence.” 

Ian Pannell, Chief Engineer, GSMA 

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