How SIM technology is at the heart of Cellular IoT

The revolutionization of SIM technology with the advent of Cellular IoT

So, what does the future hold for SIM technology?

As the world embraces the Internet of Things, one of the significant contributors to its growth is cellular IoT. With most of the service providers expanding to NB-IoT and LTE-M networks in the near future, the need to tweak the current SIM technology from its legacy system became imminent. The traditional SIM uses legacy technology that poses reliability and security risks while restricting large-scale IoT device deployments.

The evolution of Sim technology throughout the years

M2M and consumers leverage new-age SIM technology differently

There are two different types of SIM technology that users can adopt depending on their needs.

  • eSIM allows mobile network operators to send SIM profiles without the need for physical access. To facilitate this authentication method, eSIM uses an embedded Universal Integrated Circuit Card (eUICC) standard that allows remote provisioning of network profiles.
  • iSIM uses low-tier IoT connectivity such as NB-IoT and LTE-M that allows industries to save on different components such as SIM cards, SIM trays, or even eSIM chips. iSIM stands for integrated SIM which allows for manufactures to integrate the SIM functionalities into the processor of the modem which thereby reduces one extra component.

Benefits of eSIMs

It is predicted that the transition from traditional SIMs to eSIMs will likely take several years. However, significant players in the mobile manufacturing sectors have piloted eSIMs with their new models. Brands such as Apple, Samsung, Google, and many more have started manufacturing consumer-grade devices ready to embrace the biggest revolution in SIM technology. Some of the primary reasons why these companies have begun to debut the new technology include —

  • Facilitating new design as eSIMs do not require a specific spot like a traditional SIM
  • Supporting easy upgrading throughout the lifetime of the device, thanks to future-proof and reliable design
  • Works across locations as eSIMs can store several cellular profiles

eSIM Use Cases

According to a Counterpoint Research report, eSIM-based devices are expected to reach 2 billion units by 2025. This growth can be attributed to the promising global adoption of eSIM technology by several industries such as automotive, agriculture, industrial IoT, transportation, and civil infrastructure. These industries are harnessing the power of eSIM to become more cost-efficient and improve operational efficiency. Here are a few examples —

  • Automotive industries have adopted eSIM technology as a managed service as it replaces traditional SIM technology in the cars delivered globally
  • The shipping & logistics industry is one industry that has highly benefited from the advent of eSIM as there is no longer a need to physically swap SIM cards before and during transit or subscribing to expensive roaming contracts. Service providers can change network profiles as needed from their management console using remote SIM provisioning (RSP) service.
  • Wearable devices such as smartwatches and trackers often have size constraints and the usage of physical SIM cards is not an option. With eSIMs designers can create much smaller devices or free space for larger batteries and more sensors.
  • Smart utility metering has seen a recent upward trend due to the ease of reading and billing since it is done automatically. With eSIM technology, utility meters have the advantages of establishing a connection with LPWA technologies such as NB-IoT and automatically registering and latching securely onto the application.

Cavli Wireless provides a one-stop solution for eSIM provisioning & management

Cavli Wireless offers industrial-grade cellular IoT modules with integrated eSIM that offers preloaded global connectivity. Using Cavli Hubble, our robust connectivity, and a modern management platform, users can manage device connectivity requirements effortlessly. With advanced firmware installations, Cavli Smart Modules facilitate hassle-free data subscription, activation, deactivation, and troubleshooting capabilities. By leveraging Hubble Stack Intelligence, our modules can intelligently switch local operator profiles in case of movement of deployed devices across geographies or boundaries; in other words, no roaming and reduced bills.



Ajit is a Marketing & Product management professional with experience across Technology & Industrial engineering. He is the Co-founder & CMO at Cavliwireless.

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Ajit Thomas

Ajit is a Marketing & Product management professional with experience across Technology & Industrial engineering. He is the Co-founder & CMO at Cavliwireless.