One eSIM (eUICC) for multiple countries: How to expand your business with IoT connectivity eSIM Use Case: From Switzerland to China

When IoT devices are manufactured in a different location than where they will operate, you want to make sure that the device will also work once it reaches its destination abroad. This is exactly the solution Swisscom offers with eSIM or also called eUICC: Without physically replacing the SIM card, you can download the local profile, for example in China, in a secure and cost-effective way. The evolution from SIM to eSIM (eUICC) and how your business can benefit from this technology enhancement will be explained and you will learn how the remote provisioning process works by looking at a specific use case in China.

Global IoT enabling Digitalization: eSIM / eUICC for Global IoT Deployment

IoT is growing fast and is becoming more and more important to digital transformation of businesses on a global scale. In view of an increasing need for a Global IoT network, Swisscom enables businesses with its cutting-edge embedded Universal Integrated Circuit Card (eUICC) technology. It allows remote and efficient deployment and cost-effective management of thousands of IoT devices across the globe on Swisscom’s advanced IoT Connectivity Management Platform (CMP).

Swisscom IoT CMP Mobile offers a powerful core network with an open API interface, eUICC life-cycle management, B2B2C business model support and real-time reporting with the option of integration into cloud and enterprise application systems.

The process for Over-The-Air (OTA) provisioning of eUICC in a cost-efficient and secure way is automated: We provide you with a Swisscom eUICC, which can be inserted or soldered into a device. Once the device reaches its destination, a local profile from another service provider can be downloaded on to the Swisscom eUICC without any manual intervention. It is a scalable solution for your growing business with global deployment. Through remote provisioning of in-built eUICC, business and production processes can be simplified.

Regulatory Facilitation: Local connectivity for global IoT solutions

The limitations set by permanent roaming in IoT can be overcome thanks to eUICC: For instance, in China, where permanent roaming is not allowed, the localization of eUICC represents an ideal solution for companies, which are expanding their business to Asia.

Independently from the eUICC form and whether it is soldered into a device or manually inserted, the ability of remote provisioning and changing the operator depending on the location without having to change the SIM card is the true value of eUICC.

 eSIM (eUICC): The Next Generation of SIM

The next evolution of SIM cards, embedded Universal Integrated Circuit Card (eUICC), opens up new business opportunities for globally operating organizations across continents:

Without the need to physically swap the SIM card, the devices can be managed remotely.

Over the last 25+ years there has been a significant evolution in SIM (Subscriber Identity Module) card technologies: A SIM card is also called Universal Integrated Circuit Card (UICC) incorporating unique subscriber information. On the one hand, they are used by cellular carriers for identification and authentication purpose of subscribers. On the other hand, UICC enables subscribers to access the networks of the carriers. With the increased demand for smaller SIM card formats after release of 1FF SIM in 1991, in 1996 the mini-SIM (2FF) was released. In that way, especially mobile users could adopt these SIM cards rapidly. In continuation to 2FF, the micro-SIM (3FF) was launched in 2010 and could address the manufacturer demands for smaller cell-phone devices. With the rise of smartphones, the nano-SIM (4FF), an even smaller SIM, emerged.



In 2016, the Global System for Mobile Communications Association (GSMA), which represents the interests of mobile network operators worldwide, defined the global specification for embedded Universal Integrated Circuit Card (eUICC), also known as “eSIM”, allowing remote provisioning Over the Air (OTA). eUICC are easy to integrate with any device and available in various form factors, for instance 3-in-1, combining 1FF, 2FF and 3FF in one format and have to be inserted into the device similar to conventional SIM cards used for mobile phones and other devices. In contrast to these, there are also eUICC chips, which are soldered into the device while manufacturing (SON-8).

There are essentially two different eUICC specifications: M2M (IoT) and consumer.

IoT eUICC are targeting Industrial IoT devices, including cellular modules, sensors, trackers, meters and other components, all applied in an industrial and non-end-user interactive environment. eUICC in the consumer area include eUICC for consumer devices such as smartphones, tablets and laptops, as well as consumer IoT devices including wearables such as smart watches and other IoT consumer electronics.

One of the main differences in the GSMA specifications for eUICC is the way remote provisioning works for IoT and consumer devices due to the way they are triggered. The consumer eUICC will utilize a pull-mechanism, enabling the consumer to select an operator themselves and pull information about subscriptions and packages offered. The IoT eUICC will have a push-mechanism, where the business entity will select a network provider for a contractual period, and the operator will then push their profiles to the devices. In the use case explained below, the focus lies on eUICC for IoT devices in contrast to the consumer eUICC.

Use Case: From Switzerland to China  – Global IoT made simple
Global IoT Network: Close collaboration with our key partner in China



We are proud to partner with major mobile service providers such as China Telecom Global in China to offer our clients global IoT Solutions to companies based in Switzerland with Swisscom eUICC and our leading CMP Mobile Platform.



There are countless Machine-to-Machine use cases benefitting from remote provisioning of their initial operator subscription. For example, a globally operating coffee machine manufacturer is using Swisscom eUICC in mainland China, where permanent roaming is not allowed. Once the coffee machines reach China, the local Chinese profile is downloaded in an effortless and automated way on the Swisscom eUICC, without having to touch the device thanks to the advanced Swisscom CMP Mobile Platform for IoT.  Swisscom has set up the process in a way, that once the device with in-built eUICC reaches mainland China, the eUICC will automatically download the local Chinese profile and operate from it. The data generated by the coffee machines is securely sent to Azure China, which we have set up for our client in close collaboration with China Telecom Global.  In that way, the manufacturer is complying with the local Chinese regulation, according to which the data generated in China has to remain in China.


 eUICC enables global IoT deployment with remote provisioning, monitoring and management of your IoT devices without manual intervention. In this way, the supply chain and business processes can be simplified, and cost-efficiency is increased. With our comprehensive, tailored IoT system solutions and proven expertise we offer a holistic response to your needs of global IoT deployment.

Learn how our advanced connectivity eUICC IoT Solutions can enable you to deploy your IoT devices on global level:

 Contact our eUICC IoT Experts:

Order an eUICC trial kit with 5 eUICCs for testing in China: