g+d: eSIM Transforms IoT Connectivity and Management
The Internet of Things (IoT) is expanding at speed, transforming industries from logistics and agriculture to energy management and manufacturing. Each new device requires secure, scalable and flexible connectivity, yet traditional SIM card models fall short.
Giesecke+Devrient (g+d), a global provider of IoT connectivity solutions, highlights how eSIM technology is becoming indispensable for the new era. Initially developed for automotive and machine-to-machine applications, eSIMs now provide the robust, adaptable connectivity that IoT devices need across their entire lifecycle, from production to deployment.
Soenke Schroeder, Director Global Go-to-Market Strategy & Innovations for Connectivity & IoT at g+d, explains: “In the IoT sector, eSIM technology will be central to advancing modern connectivity and manufacturing processes. Key advantages include digitalisation of workflows, greater efficiency, cost savings and enhanced security.”
SGP.32 introduces greater flexibility
A major development is the arrival of the new eSIM standard SGP.32. Unlike the SMS-based SGP.02, which cannot fully meet modern IoT requirements, SGP.32 supports a range of IP-based protocols. It allows devices to be managed more efficiently across their lifecycle.
SGP.32 also makes profile switching simpler, helping device manufacturers comply with regional and regulatory requirements such as local roaming rules. With many enterprises still operating under SGP.02, g+d stresses that platforms must support both standards to allow centralised management of mixed device fleets.
IFPP simplifies provisioning from the factory
Another innovation is In-Factory Profile Provisioning (IFPP). Working alongside Remote SIM Provisioning (RSP), IFPP enables secure and automatic loading of eSIM profiles during the manufacturing process.
Manufacturers can either install a bootstrap profile, which enables a device to download its final subscription after activation, or provision the final subscription directly in the factory. No manual configuration or physical intervention is necessary after production.
Following deployment, RSP allows profiles to be updated over-the-air. That flexibility means operators can switch IoT devices to different networks as required, reducing downtime and optimising performance.
Enabling private 5G networks
The growing deployment of Private 5G networks highlights the value of eSIM technology. Machines equipped with eSIMs connect more reliably to 5G than those using traditional SIM cards, which can be affected by factors such as vibration or corrosion.
For operators managing large machine fleets, centralised eSIM platforms are critical. Soenke notes: “eSIMs also provide a high degree of flexibility and are network-agnostic, meaning that IoT devices can switch providers multiple times over their lifetime.
"Users can choose the best operator based on factors such as coverage, quality, required bandwidth, price, or device location.”
With SGP.32, profile changes can be made following deployment, ensuring seamless transitions from private to public networks or between operators in response to coverage challenges.
Secure, cost-effective cellular connectivity
Cellular networks, supported by global standards, offer clear advantages over Wi-Fi or Bluetooth in manufacturing and industrial environments. They deliver stronger security, more predictable performance and simplified compliance.
Although Wi-Fi and Bluetooth may appear cost-free, cellular connectivity can be highly cost-effective when managed intelligently. g+d’s AirOn360 Intelligent Online platform, for example, supports time-limited IoT connectivity.
By activating cellular services only when required, enterprises can cut data costs without compromising performance.
Streamlining product design and operations
The embedded nature of eSIMs means fewer moving parts in devices, reducing design complexity and eliminating the need for SIM slots. It lowers the Bill of Materials (BOM) and simplifies product development.
For operations teams, eSIMs reduce logistical burdens. Remote devices can be reconfigured over-the-air rather than requiring costly on-site visits. In addition, enterprises can reduce the number of Stock Keeping Units (SKUs) by using standardised device models across multiple regions, simplifying inventory management.
Driving the next phase of IoT
With billions of devices expected to connect in the coming years, Telcos and enterprises must rethink connectivity strategies. eSIM technology, combined with innovations such as SGP.32 and IFPP, provides the flexibility and scalability needed to support global IoT rollouts.
As Soenke concludes: “New profiles can then be securely and efficiently provisioned, for example, through g+d’s AirOn360 platform.” For telecom operators, embracing eSIM is not only about improving efficiency but also about positioning networks at the heart of future IoT ecosystems.