NuvoLinQ And Kigen Publish Guide To Choosing The Right eSIM Standard
NuvoLinQ has partnered with Kigen to publish a new selection guide walking businesses through the three eSIM standards defined by the GSMA: M2M, Consumer, and IoT.
Choosing the wrong specification is an easy mistake to make. All three fall under the umbrella of Remote SIM Provisioning (RSP), and the acronyms, SGP.01, SGP.21, SGP.32, can look interchangeable from the outside. In practice, they were built years apart for different classes of device, and the differences show up quickly once a fleet is in the field.
The guide breaks down each standard side by side, covering when each was published, how it handles profile delivery (a push model for legacy M2M versus the pull model consumer and IoT devices use), and the architecture behind it, from the original SM-DP and SM-SR split to the newer eIM and IPA components purpose-built for constrained IoT hardware.
It also gets into the practical trade-offs: which standard suits a device with no user interface, where vendor lock-in risk shows up, and why SGP.32, published in 2023 specifically for large-scale, low-power IoT deployments, has become the reference point for new headless fleets.
The full guide is below. It’s designed as a quick reference for teams evaluating connectivity for an upcoming deployment, a starting point for narrowing the field before a conversation with your account manager.