Total Freedom with Simplex Open SIM (xoSIM): Redefining SGP.32 eSIM Management

The new eSIM specification for IoT from GSMA named SGP.32 is changing how enterprises manage eSIM for IoT. It introduces a flexible, scalable way to provision and control connectivity without being tied to legacy frameworks. But at Simplex Wireless, we’ve taken it one step further with a unique industry-first concept: the Simplex Open SIM (xoSIM).

With xoSIM, you gain total freedom in how you manage your IoT connectivity. You can use Simplex connectivity or bring your own connectivity—all managed through our in-house EIM platform. It’s a solution designed for enterprises that demand choice, independence, and flexibility at scale.

What Makes xoSIM Different?

Most eSIM solutions in the market are tightly coupled to:

• Mobile Network Operators (MNOs), who want to lock you into long-term contracts.
• EUMs (SIM card manufacturers), who tie eSIM management to their own hardware.

Simplex Wireless breaks that mold. Our xoSIM is built on SGP.32 and designed to be independent. That means:

• You’re not tied to a single carrier or SIM manufacturer.
• You can use Simplex Wireless global connectivity in 191 countries—or bring your existing connectivity from providers like Hologram or floLIVE.
• No more truck rolls just to swap SIMs. xoSIM lets you switch connectivity over-the-air, instantly.

This is total freedom in eSIM management—something no other provider on the market offers.

All the bells and whistles

With SGP.32, eSIM profiles can be delivered in two ways:

• Direct Download: The IoT Profile Assistant (IPA) on the SIM (IPAe) or device (IPAd) communicates directly with the subscription manager.
• Indirect Download: Profiles are managed centrally through an EIM, which orchestrates provisioning on behalf of the device.

The Simplex EIM supports both models, giving you the flexibility to deploy eSIM in the way that best suits your devices and workflows.

Bring Your Own Connectivity

The true uniqueness of xoSIM is its bring-your-own-connectivity approach.

• Already have a contract with Hologram or floLIVE? You can bring those eSIM profiles into Simplex xoSIM for management.
• Have your own SIM cards with IPAe support or devices with IPAd clients? You can integrate them into the Simplex EIM seamlessly.

This interoperability means you don’t have to abandon existing contracts or devices—you simply gain a smarter, more flexible way to manage them.

Technology Built on 30+ Years of Experience

The Simplex Wireless EIM platform isn’t outsourced. It is 100% built in-house by a team with 30+ years of experience designing carrier-grade platforms.

Our EIM supports:

• Direct and Indirect profile downloads
• ASN.1 and JSON bindings for integration flexibility
• Carrier-grade reliability with disruptive pricing

By owning the technology end-to-end, Simplex gives customers full visibility, flexibility, and confidence in their eSIM deployments.

A Turnkey Option with Simplex Connectivity

While xoSIM gives you the freedom to bring your own connectivity, you can also choose a turnkey solution by combining xoSIM with Simplex Wireless global IoT SIM cards.

This package includes:

• Multi-network access in the USA (AT&T, Verizon, T-Mobile)
• Coverage in 191 countries and 550+ networks
• Flexible pricing models including Pay-As-You-Go and Pooled Bundles
• Support directly from our Atlanta-based operations team

The Future of IoT eSIM Management

SGP.32 was created to bring IoT-specific functionality into eSIM. By combining the remote management of SGP.02 with the acquisition simplicity of SGP.22, it delivers the best of both worlds. But with xoSIM, Simplex Wireless has gone further:

• Independence from MNOs and SIM vendors
• Freedom to use Simplex or your own connectivity
• Centralized management via an in-house EIM
• Flexibility across Direct and Indirect download models

This is not just an eSIM—it’s a platform for total freedom in IoT connectivity.

Ready to experience eSIM without limits?

Learn more about Simplex xoSIM or contact us today to see how you can take control of your eSIM strategy.