What Is SGP.32 and Why It Matters for IoT eSIM Deployments

The GSMA SGP.32 specification is the latest and most important evolution in eSIM for IoT. It’s designed to simplify how IoT devices connect to cellular networks globally—especially for constrained devices like GPS trackers, sensors, and wearables that lack user interfaces.

Previous eSIM standards—built for either M2M or consumer use cases—introduced heavy infrastructure and operational complexity. SGP.32 removes these limitations by introducing a more flexible and scalable architecture tailored specifically for IoT connectivity at scale.

How SGP.32 Improves eSIM Provisioning for IoT

SGP.32 introduces two major innovations that reshape how eSIM provisioning works for IoT deployments:

IoT Profile Assistant (IPA): A lightweight software component that allows devices without screens or keyboards to manage eSIM profile downloads and activations using predefined logic or commands.

eSIM IoT Manager (EIM): A new management layer that operates independently from mobile operators and SIM card vendors, giving solution providers direct control over SIM profile switching and provisioning.

These enhancements make remote SIM provisioning for IoT devices simpler, faster, and more secure—while reducing vendor lock-in and deployment delays.

Why SGP.32 Is a Game-Changer for Scalable IoT Deployments

For companies managing fleets of IoT devices—whether for logistics, smart infrastructure, or asset tracking—SGP.32 offers real operational benefits:

Network independence: Switch carriers remotely without needing to swap SIMs or access the device.

Lower deployment cost: Avoid building or licensing heavy carrier infrastructure like SM-DP+ servers.

Global scalability: Use a single eSIM platform to manage deployments across multiple countries and carriers.

Developer-friendly APIs: Automate SIM behavior, provisioning, and monitoring from your own backend system.

Simplex Wireless: The Best Independent eSIM Provider Built for SGP.32

While many companies are just beginning to evaluate SGP.32, Simplex Wireless is already built to support it. We’ve developed a proprietary eSIM IoT Manager (EIM) in-house—without relying on legacy Mobile Network Operators (MNOs) or SIM card manufacturers (EUMs).

That independence means we provide:

• True vendor-neutral eSIM management
• Multi-carrier profile orchestration through a single platform
• Direct API access for full provisioning control
• Faster innovation cycles without waiting on third-party systems

Simplex is one of the only eSIM providers in the market that is not owned or controlled by a mobile carrier or SIM card vendor. That puts the power of eSIM back in your hands—where it belongs.

Why Choose an Independent eSIM Platform for Your IoT Deployment

If you’re evaluating eSIM options for IoT, here’s why Simplex stands out:

• We support LTE-M, NB-IoT, Cat-1, and 5G, all on a single SIM.
• Our SIMs are globally deployable with intelligent roaming and multi-network support.
• Our platform is SGP.32-ready, giving you early access to the latest in remote SIM provisioning.
• We deliver the flexibility and transparency that traditional carriers and SIM vendors can’t—or won’t—offer.

When you build your IoT deployment with Simplex Wireless, you’re future-proofing your connectivity from the start.

Who Should Care About SGP.32 and eSIM for IoT?

• GPS tracking solution providers looking for scalable global deployments
• OEMs and device manufacturers needing a flexible SIM strategy
• Logistics, telematics, and smart city operators managing high-volume fleets
• Product managers and IoT architects responsible for long-term device connectivity planning

If your devices need to move across borders, work without user intervention, or update SIM profiles automatically, then SGP.32 is the standard you should be building around—and Simplex is the partner to help you do it.

Take Control of Your eSIM Strategy with Simplex Wireless

The next generation of IoT eSIM connectivity isn’t just about better specs—it’s about control, flexibility, and independence. At Simplex Wireless, we’re proud to lead the way with an in-house EIM platform that’s fully aligned with SGP.32 and purpose-built for global, scalable IoT deployments.

We’re not tied to any MNO. We’re not selling you SIMs locked to one region. And we don’t rely on third-party infrastructure. That’s the Simplex difference.

Want to simplify your eSIM deployment and stay ahead of the curve? Talk to us today about how our platform can future-proof your IoT solution.

This article was curated by Jan Lattunen, CCO Simplex Wireless

About the Author: Jan Lattunen manages Sales and Marketing for Simplex Wireless. Jan has 20 years’ experience in working with SIM card technology and was involved in launching the eSIM in North America with major carriers and OEMs. His expertise in telecommunications is around SIM cards. On a personal note, Jan is a family man and avid cyclist with advocacy for safety in the roads. You can connect with Jan on https://linkedin.com/in/JanLattunen