
How to Choose the Right SIM & Cellular Strategy for Reliable IoT
October 13, 2025Keeping IoT Connected Everywhere: Global Rollouts & Cost Control
Global IoT deployments demand reliable connectivity, flexible eSIM technology, and predictable costs. Choosing the right IoT connectivity partner helps you scale without managing multiple carrier contracts or unpredictable roaming fees. In this article, we break down how to plan an international rollout, test devices properly, and leverage Simplex Wireless xoSIM—an SGP.32-enabled eSIM solution—to simplify management and keep costs under control anywhere in the world.
Quick Navigation
- Planning Your IoT Deployment for Global Success
- Avoiding Carrier Complexity with a Single Global SIM
- Leveraging eSIM (SGP.32) for Seamless Remote Management
- Testing Devices and Bands by Region
- Controlling Roaming and Data Costs Across Countries
- How Simplex Wireless Makes Global Rollouts Simple and Predictable
- Takeaway: Simplicity Is the Key to Global IoT Connectivity
Planning Your IoT Deployment for Global Success
Rolling out IoT projects across borders requires careful planning. It’s not just about buying SIM cards and inserting them into devices—it’s about ensuring consistent connectivity, compliance, and cost efficiency in every region.
The first step to global IoT success is defining where your devices will operate and how they’ll communicate.
Ask these key questions before launch:
- How many countries will the deployment cover?
- Are the devices mobile (crossing borders) or stationary?
- What are the expected data usage patterns?
- Will your devices need over-the-air eSIM provisioning or local network switching?
The answers shape your SIM selection, pricing model, and network strategy.
At Simplex Wireless, we help customers design deployment plans that anticipate challenges before devices leave the warehouse—ensuring connectivity from day one and cost predictability long after.
Avoiding Multiple Carrier Contracts and Complexity
Managing IoT connectivity with multiple carrier agreements is a logistical nightmare. Each carrier means different pricing, APN settings, dashboards, and support processes.
A better solution is to use a global IoT SIM that works across hundreds of carriers through one management platform. With Simplex Wireless global IoT SIMs, one SIM card provides access to 191 countries and 550+ networks.
Why One SIM Card Is Better Than Many
- Simplifies management: One billing relationship, one platform, one API.
- Reduces risk: Automatic network switching prevents outages if one carrier fails.
- Saves time: No need to renegotiate contracts or maintain separate rate plans.
This single-SIM approach streamlines global rollouts, freeing engineering and operations teams to focus on the actual product instead of carrier paperwork.
Leveraging eSIM (SGP.32) for Seamless Remote Management
The GSMA SGP.32 specification—the newest global eSIM standard—was built specifically for IoT scalability. It combines the remote provisioning flexibility of SGP.02 with the simplicity of SGP.22, letting you manage network profiles entirely over the air.
With SGP.32, enterprises can:
- Remotely download, switch, or delete network profiles on deployed devices.
- Avoid truck rolls when connectivity changes are needed.
- Maintain compliance with local roaming restrictions by switching to local profiles.
Simplex Wireless has built this capability directly into our xoSIM Open SIM. It’s a native SGP.32-enabled eSIM that provides full remote subscription management through our in-house EIM (eSIM IoT Manager).
Our platform supports both Direct and Indirect profile downloads and offers ASN.1 and JSON bindings—ensuring compatibility across devices and vendors. Whether you use Simplex connectivity or bring your own, xoSIM gives you complete control without dependence on a single carrier or SIM manufacturer.
Testing Devices and Bands by Region
Even the most advanced IoT SIM won’t help if the hardware isn’t compatible with local frequencies. Before mass deployment, it’s critical to verify that your IoT devices support the cellular bands used in each target market.
For example:
- North America: LTE bands 2, 4, 5, 12, 13, 17, 25, 26, 66.
- Europe: LTE bands 3, 7, 8, 20.
- Asia-Pacific: LTE bands 1, 3, 5, 8, 18, 28, 41.
Using the wrong modem or band configuration can lead to poor signal performance or complete connectivity failure.
At Simplex, we recommend customers run a regional test using our trial SIM program before full rollout. These tests confirm that both the hardware and network work seamlessly where devices will operate—preventing costly field replacements later.
Controlling Roaming and Data Costs Across Countries
One of the biggest misconceptions in IoT connectivity is that “global SIM” means “uniform pricing.” While global SIMs can technically connect almost anywhere, the cost of roaming varies by region.
Some regions, like Western Europe or North America, have competitive wholesale rates. Others—such as South America or parts of Asia—can be considerably higher.
Key Tips for Managing Global Data Costs
- Understand regional cost variations. Ask your provider for transparent rate sheets.
- Use eSIM for flexibility. If roaming rates rise, SGP.32 eSIMs like xoSIM allow a remote switch to a local profile with better rates.
- Use pooled or pay-as-you-go plans. Simplex offers pooled data bundles and PAYG models that prevent overages.
- Monitor usage via APIs. Our management platform offers real-time visibility into per-SIM data consumption.
This approach ensures you can scale internationally without unexpected bills, even as your devices cross borders.
Example: A logistics firm operating in 40 countries used Simplex’s pooled plan combined with eSIM management to reduce data costs by 27% compared to a multi-carrier setup.
How Simplex Wireless Makes Global Rollouts Simple and Predictable
At Simplex Wireless, our mission is to remove the friction from IoT connectivity. Whether you’re deploying 100 devices or 100,000, our solutions make global rollouts scalable, cost-effective, and predictable.
Unified Global APN
Our IoT SIMs and eSIM profiles use a single APN configuration worldwide (simplex.iot), regardless of the carrier or region. This simplifies device configuration, testing, and fleet management.
Developers can hard-code one APN and deploy devices globally without changing firmware for each market.
Rollback for Device Safety
With xoSIM and our EIM platform, customers benefit from eSIM rollback protection. If a profile switch fails or a new carrier becomes unavailable, devices automatically revert to their last working profile—preventing them from being stranded offline.
Independence from Carriers and SIM Vendors
Unlike traditional providers, Simplex Wireless is fully independent of MNOs (Mobile Network Operators) and EUMs (SIM card manufacturers).
This independence means customers get:
- Freedom to use Simplex connectivity or bring existing eSIM contracts (Hologram, floLIVE, etc.).
- Full access to eSIM management services without lock-in.
- Transparent pricing with no hidden fees.
Predictable Support and Fulfillment
All sales, support, and fulfillment are managed directly from Atlanta, Georgia. Customers in the U.S. and Canada get responsive communication, quick delivery, and hands-on technical assistance.
When issues arise, your support team isn’t in another time zone—you’re speaking directly with engineers who understand both the hardware and network.
Takeaway: Simplicity Is the Key to Global IoT Connectivity
Global IoT doesn’t have to be complicated. The best strategies balance reach, flexibility, and cost control.
A future-ready IoT deployment should:
- Use one global SIM to eliminate carrier complexity.
- Adopt SGP.32 eSIM technology to enable remote management and switching.
- Test devices in every region before scaling.
- Optimize for cost using pooled data plans and transparent pricing.
- Choose a partner like Simplex Wireless for independence, in-house eSIM management, and real local support.
By combining these principles, enterprises can keep IoT connected everywhere—reliably, affordably, and at scale.
Ready to simplify your global IoT rollout? Talk to our team or request a trial SIM today.
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