For years, IoT developers and enterprises have clung to the promise of the eSIM—a digital solution meant to simplify connectivity and power global deployment. But in reality, a single eSIM alone isn’t enough anymore.

Today’s IoT customers are demanding something more ambitious: the ability to deploy a single eSIM SKU device globally and know it will remain connected across any geography, under any network condition, and despite varying regulatory restrictions. They want that device to be resilient—to not blink in the face of network outages, to roam permanently when needed, and to pass smoothly through every compliance check in the book.

The truth? Until recently, this level of performance wasn’t possible. The missing link wasn’t just in the networks—it was in the devices themselves.

The Hidden Connectivity Bottleneck: Your Device

Eseye, a leader in global IoT connectivity, recently released a whitepaper that flips the conventional wisdom on its head. Their findings reveal that 80% of all connectivity issues in IoT devices stem from the device itself, not from the SIM or network.

Eseye’s analysis shows that many devices are simply not built to roam intelligently, switch efficiently, or even handle network failovers. And this lack of optimisation is costing companies valuable data, uptime, and ultimately—business outcomes.

On the flip side, Eseye customers with properly configured and tested devices have achieved 100% data delivery within specified latency thresholds. That’s not just impressive—it could be an industry first.

The 3-Step Journey to Near-Perfect Connectivity

So how do you get there? Eseye outlines a 3-step methodology to help organisations achieve near 100% global connectivity:

1. Device Assessment
   Start by identifying weak links in your device’s connectivity stack. This includes evaluating how well it handles network switching, how long it takes to recover from failures, and whether it complies with emerging standards like SGP.32.
   
   
2. Validation
   Put your device through rigorous, real-world testing—simulating geographic transitions, network outages, and roaming challenges. This is where most devices stumble, and it’s where true optimisation begins.
   
   
3. Remediation
   Once flaws are identified, the device must be optimised—from firmware to battery usage, from IMSI switching logic to local breakout configuration. Eseye provides expert guidance throughout this phase.

A Global Architecture Built for Reliability

But fixing the device isn’t enough on its own. Eseye complements this 3-step process with a powerful architectural approach that includes interconnects and local breakouts across 25 Mobile Network Operators (MNOs) around the world.

This design helps avoid the pitfalls of single-network dependence and ensures that devices always have a nearby, high-performing network to connect to—even when roaming restrictions or outages hit.

In short, Eseye is building IoT infrastructure with failure in mind—so your devices don’t have to fail.

Ready to Future-Proof Your IoT Devices?

If you’re launching global IoT products—or struggling with unreliable connectivity—it’s time to rethink your approach.

This whitepaper is more than just a checklist; it’s a roadmap to achieving resilient, global, near-100% connectivity that your customers can count on. From tackling the root causes of data loss to navigating the complex maze of compliance, Eseye is helping redefine what IoT connectivity should look like in 2025 and beyond.