As the IoT ecosystem grows more global, mobile, and scalable, the days of soldered SIM cards and fixed network profiles are over. Enter the eSIM revolution—specifically SGP.32, the GSMA’s next-generation specification for IoT eSIM provisioning.

If you’re wondering how to implement eSIM in your IoT device fleet, this guide explains the benefits of SGP.32, how it works, and why Simplex Wireless is leading the charge with a disruptive, cost-effective platform—engineered and operated right here in Atlanta, Georgia.

What Is SGP.32 and Why Should IoT Companies Care?

SGP.32 is the latest eSIM specification from the GSMA, specifically designed to meet the unique demands of IoT deployments. It simplifies the remote management of eSIM profiles on devices that are:

• Headless (no user interface)
• Battery-powered or low-bandwidth
• Mass-deployed across multiple geographies

Unlike consumer-focused SGP.22, the SGP.32 framework enables the IoT device or the SIM itself to initiate eSIM profile downloads through a secure and lightweight process—ideal for GPS trackers, smart sensors, wearables, EV chargers, and more.

How Does SGP.32 Work?

SGP.32 enables remote provisioning and switching of SIM profiles via a process known as the IoT Profile Assistant (IPA). It removes the need for MNO-controlled platforms or physical access to the SIM card.

Key benefits include:

• SIM-initiated eSIM profile download via BIP (Bearer Independent Protocol)
• Lightweight architecture designed for intermittent or constrained devices
• Vendor-neutral operation—no MNO or SIM vendor lock-in
• Full lifecycle control of profiles from bootstrap to commercial
• Ideal for small, medium and large-scale IoT deployments

If you want to learn more about how BIP works in practice, see our guide on Enabling BIP/STK for SGP.32 Deployments.

Why Simplex Wireless Built Our Own SGP.32 EIM In-House

Unlike most IoT connectivity providers who rely on external EUM platforms or mobile network operators (MNOs), Simplex Wireless made a strategic decision: build our own eSIM IoT Manager (EIM) platform in-house.

Developed and operated entirely from our Atlanta, Georgia headquarters, the Simplex EIM is a:

• Carrier-grade eSIM management platform
• Fully compliant with GSMA SGP.32 specification
• Designed for full automation at scale

This independence gives Simplex unmatched control, flexibility, and cost efficiency—and it passes those benefits on to our customers.

Independence from MNOs and EUMs = Lower Cost, Greater Flexibility

Most eSIM providers today are tied to:

• A single mobile network operator (MNO)
• A licensed eUICC manufacturer (EUM)
• Limited carrier profile options

At Simplex, we operate independently from both. That means:

• We can load any GSMA-compliant eSIM profile
• We can move your devices across carriers without delays
• You can scale globally without compromising control

Need to switch thousands of devices from Carrier A to Carrier B in one click? We can do that—without going through an MNO’s ticketing system.

Use Case: Scaling an IoT Project with eSIM the Right Way

Let’s say you’re deploying 5,000 smart devices across North America and Europe. With traditional SIMs, you’d have to:

• Order physical cards from Connectivity Provider
• Be locked in until you physically replace the SIM card
• Send field technicians when a change is needed

With Simplex SGP.32 eSIMs, you can:

• Start with a single bootstrap profile
• Switch profiles as your business evolves
• Save dramatically on logistics, downtime, and fees

You can learn more about how this works by visiting our eSIM IoT Platform page.

Why Choose Simplex Wireless for SGP.32 eSIM Management?

• In-house EIM built from the ground up for IoT
• No MNO or EUM lock-in
• U.S.-based operations and support from Atlanta
• Low-cost, transparent pricing (see No Hidden Fees)
• Trusted by GPS, telematics, and hardware OEMs scaling globally

Ready to Future-Proof Your IoT Connectivity with SGP.32?

Whether you’re deploying thousands of trackers or connected EV chargers, Simplex Wireless makes eSIM implementation simple, scalable, and cost-effective.

Contact our team to learn how to get started with SGP.32 eSIM management for your IoT devices—or request a trial SIM and experience the difference yourself.