Nordic Semiconductor has introduced a software-based integrated SIM (iSIM) for its nRF91 Series of cellular IoT modules, aiming to simplify device design and manufacturing while improving durability and reducing costs.
The new system, called nuSIM, replaces physical SIM cards and sockets with software embedded within the module’s secure hardware environment. Developed to an open standard, the iSIM stores and manages SIM credentials inside a protected area of the device, using Arm’s TrustZone technology.
By eliminating external SIM hardware, Nordic says the approach cuts the bill of materials, saves circuit board space, and reduces mechanical failure points — a particular advantage for devices deployed in harsh environments such as water meters and agricultural sensors. The company also claims that removing the SIM socket can help protect devices against corrosion and vibration damage.
“Making cellular IoT as simple and accessible as possible is a core mission at Nordic,” said Øyvind Birkenes, Executive Vice-President for Long-Range at Nordic Semiconductor. “By integrating the nuSIM standard into our nRF9151 and nRF9160 modules, we are removing the physical barrier to creating ultra-compact, robust, and cost-effective cellular IoT products. Developers can now manage connectivity entirely in the digital domain, from manufacturing to deployment.”
The fully digital provisioning process allows SIM profiles to be securely installed during manufacturing, simplifying logistics and enabling network credentials to be delivered remotely. Nordic has collaborated with China-based Redtea Mobile on the nuSIM integration library, which handles provisioning and ensures compliance with the open nuSIM specification. The implementation has been certified by TÜV Nord in Germany for security and reliability.
Birkenes added that nuSIM not only lowers costs but also reduces power consumption compared with traditional SIMs, extending battery life in field-deployed devices that may run for years without replacement.
Deutsche Telekom is the first mobile network operator to offer commercial nuSIM profiles, with other operators expected to follow.
Nordic Semiconductor, based in Oslo, specialises in ultra-low power wireless connectivity solutions for consumer, healthcare, and industrial applications.
There’s plenty of other editorial on our sister site, Electronic Specifier! Or you can always join in the conversation by commenting below or visiting our LinkedIn page.
