Mainstream adoption only occurs when early adopters succeed.

 Redtea Mobile is driving the early adoption of eSIM & integrated SIM for a cellular IoT future.

By Helen Chen

Part 1: Stepping into a cellular IoT future


Global IoT cellular connections will approach 5 billion by 2025 with NB – IoT to contribute nearly half ( according to counterpoint research)  The majority non – M2M cellular IoT connection are related to mobile phones and a small amount of smart wearables, while M2M covers new devices such as wearables, tablets, portable PCs, drones, automotive and many connected devices across verticals (IoT) .


To drive a more connected future with cellular IoT ( unlike conventional IoT networks are connected to the Internet via LAN and Wi-Fi , the peculiarity with cellular IoT is that the Internet connection is established via the same telecommunication networks that smartphones, especially in 5G era that comes with more infrastructure of base station construction, making cellular IoT a strong driver in the world of IoT connectivity),


Connectivity solution provider is positioned to provide cellular connectivity service that boosts the following requirements:


 A. Very dynamic connectivity

 B. Wide and global coverage 

 C. Better user experience

D. Scalability

E. Save TCO

F. Open ecosystem

G. Innovative business ideas

H. Quality of Service



                                                    source: Redtea Mobile eSIM & iSIM Lab


A. Very dynamic connectivitydepending on the environment changes and the required QoS, there would be varying number of IoT applications with different requirements within one network, deploying several access technologies such as LTE, NB-IoT, Cat-M and NR.  


With established infrastructure,  a straightforward IoT rollout and mature QoS mechanism , cellular networks can support a broad range of IoT Applications ranging from low cost IoT devices like LPWAN area to high-end use cases like in-car telematics and infotainment.


B. Wide and global coverage – covering 90 percent of the world’s population, cellular networks have been developed and deployed over three decades, and will be around for a predictable promising future. 


             C. Better user experience –  throughout the years, UX practices have evolved and adapted 

               to  the latest technology trends, from the desktop application era, to the web revolution, to 

               the mobile revolution. Cellular connectivity could maximize the mobile experience with mobile 

               connectivity, especially with the emergence of eSIM to enable flexible and dynamic network  

               service, for example, multiple and flexible carrier options, standalone smart watches or tablets.


D. Scalability – to handle massive IoT deployment, the key is to scale efficiently, and the initial investment and the later operation and maintenance should all be manageable, most important of all, to be able to handle network capacity and massive traffic of thousands and millions of devices, a promising cellular future with connectivity could cater to the needs.


E. Save TCO – Normally the traditional connectivity solution would be challenged for labor cost and complicated procedure cost when handling massive IoT.  In the case of cellular IoT, operators or solution providers could  offer one-stop connectivity for IoT applications from the start-up phase and grow this business with low TCO and only limited additional investment and effort. Operation in licensed spectrum also provides predictable and controlled interference, which enables efficient use of the spectrum to support massive volumes of devices.


F. Open ecosystem – A huge and mature ecosystem of cellular connectivity incorporates chipsets and module makes, devices and network equipment OEMs, connectivity service providers, operators, application providers etc,united and managed by 3GPP standardization forum,  to ensure the alignment or gain a majority of support of all eco partners to drive end-to-end massive IoT deployment.


G. Innovative business ideas – basically, all enterprises that are considering IoT solutions are actually paving the way for digital transformation,  IoT cellular connectivity offers many market opportunities when high-resolution data insights and measured customer value are combined. It enables new monetization concepts, which are the heart of business models.


H. Quality of Service – QoS mechanisms is a key factor for many IoT applications. Cellular connectivity delivers mature QoS functionality, and this enables critical MTC applications to be handled together with traffic from sensors, voice and mobile broadband traffic on the same carrier. QoS, along with licensed spectrum as described above, provides a foundation for long-term SLAs with a specific grade of service.

Part 2: The restraints of conventional SIM for cellular IoT, and eSIM & iSIM Innovation


                                                    source: Redtea Mobile eSIM & iSIM Lab


The basic glue or key enabling this connectivity, the SIM, has also significantly evolved in form-factor to align with the explosion of devices beyond mobile phones. However, there would be some limits of conventional SIM when ushering a cellular IoT future.


For example, for market need and business concern, to ship a device from country A to country B, or consumer IoT devices that needs to roam, SIM card should be swapped to another for another carrier, causing a lot of inconvenience and labor of cost, especially in industrial IoT or massive IoT when thousands of millions of devices to be deployed.  Even with those devices (like smart metering or telematics in cars) without the need to roam, their SIM card would still need to be swapped after a certain life cycle and have the same issue as mentioned above. 


And some devices would be deployed in harsh environment(extreme high/low temperature、vibration, long time exposure, long lifecycle of devices), physical SIM card with a slot is definitely not a good option, and in such a competitive era, device OEMs are all looking for edge in device size and weight, to remove the SIM and slot for a lighter device and better industrial design would be a huge breakthrough.


And for the operation and maintenance part,  the bills for data service, the unstable connectivity with insufficient coverage by one carrier (bound with one SIM card), and the fragmented IoT applications and connectivity requirements for versatile device interface would all pose a threat to the massive IoT deployment that are expected to scale in a easy and fast GTM way, to step into a smart-connected IoT era, and to user in a massive IoT future.


Thus, the SIM innovation is the trend, and will be the future in the next few years. In order to enable a massive IoT market, network needs to scale efficiently, the SIM technology innovation is always under construction and have witnessed some milestones.  Now that we’ve met eSIM and integrated SIM, the massive implementation of these two more advanced SIM technologies,which leaves questions and large market for connectivity service providers.


Part 3: Typical Applications of eSIM & integrated SIM (scroll left or right to learn more)


Part 4: To secure the successful deployment of an end-to-end use case, all stakeholders need to be aligned. 
Mainstream adoption only occurs when early adopters succeed, RedteaSIM is driving the early adoption of eSIM & iSIM for a cellular IoT future with an approach to align its eco partners and drive real implementation for vertical market segments.
    • The GSMA, MNOs, and IoT systems integrators created a landscape capable of globally addressing different IoT market segmentation, Redtea Mobile and more industry players are supporting GSMA specifications and we’re looking forward to the ecosystem sharing their success stories.
    • With well-established ecosystem for eSIM and iSIM. At Redtea Mobile, we’re working together with the entire ecosystem to help succeed and make sure that eSIM and iSIM become mainstream. Our established RedteaReady and RedteaSIM Solutions help chipset makers, device makers, OEMs and MNOs to form new business models and deliver exciting UX experience, to be practical, to optimize the cost, implementation and deployment  for connecting IoT devices, by enabling cellular IoT connectivity at a much lower price point and with greater flexibility of deployment.

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