5 benefits of building with eUICC

An embedded universal integrated circuit card (eUICC) allows devices to swap SIM subscriber profiles over the air. With a single physical SIM, either triple-cut or embedded, a device can load one carrier profile and then swap to another carrier profile at a later date.

If you’re used to removing and inserting physical SIM cards every time your devices need new profiles, adding this technology to your IoT devices could simplify your operations in mind-blowing ways. While embedded SIM (eSIM) gets a lot of attention, it’s worth noting that eUICC software can live on a physical SIM, too. If you have an existing fleet of IoT devices with slots for physical SIMs, switching to eUICC-enabled cards can offer similar benefits without a complete product overhaul.

Key takeaways

• eUICC enables remote SIM profile management over the air, eliminating the need to physically swap SIM cards when IoT devices change carriers or regions.
• A single eUICC-enabled SIM works for global deployments, reducing manufacturing complexity from multiple SKUs to one and accelerating time to market.
• IoT managers can preload multiple carrier profiles on one eUICC card and add, delete, or switch profiles remotely after devices are deployed in the field.
• Partnering with a carrier-agnostic provider offloads carrier negotiations and hardware integration, letting teams focus on deployment rather than connectivity logistics.

How eUICC transforms IoT connectivity

eUICC transforms IoT connectivity by enabling remote SIM profile management—eliminating the need to physically swap SIM cards when devices change carriers or regions. This over-the-air provisioningcapability simplifies supply chains, enables dynamic carrier switching, and creates more resilient, scalable deployments.

If you’re still in the design stage, building with eUICC-enabled eSIMs, tiny SIM hardware soldered directly to the device’s motherboard, might be the best option.

Here's how incorporating eUICC yields many benefits for your IoT deployment. Here are five:

A single SIM works for multiple deployments anywhere in the world

With traditional SIMs, IoT project managers must anticipate device destinations and install region-specific carrier profiles before deployment. This adds complexity to manufacturing and slows your supply chain.

eUICC changes this entirely:

• Single SKU simplicity: One card (or one soldered eSIM) works for every global deployment
• Remote provisioning: Set up devices with optimal carrier profiles via OTA after they're in the field

Update your SIM profiles as needed, even after they’re deployed

With centralized profile management, you can store multiple profiles on a single eUICC-enabled card or eSIM. For use cases like asset tracking and shipping monitors that move across regions, preload devices with every profile they'll need. Think of it as a passport filled with visas for every country on the itinerary.

When devices are recalled and redeployed to new regions (or rerouted unexpectedly), eUICC lets you add, delete, and manage profiles remotely. No truck rolls or manual SIM swaps required.

Device firmware also downloads OTA, meaning eUICC-equipped devices are self-improving and prepared for network sunsets and other changes.

Spend less and get more tailored coverage on your data connectivity plan

Data connectivity is a significant expense for IoT projects at scale, and one-size-fits-all data plans rarely work. eUICC enables cost optimization in two ways:

• Customized pricing: Devices receive tailored SIM profiles based on regional needs, allowing providers to match pricing and coverage to your business goals
• Single SKU efficiency: One SIM card or eSIM hardware type across your entire deployment reduces procurement complexity

Let your provider handle carrier negotiations while you focus on deployment

Negotiating with carriers about coverage, data costs, and profile flexibility is time-consuming and hardware integration adds another hurdle. A carrier-agnostic provider handles this for you, leveraging their global carrier relationships on your behalf.

At Hologram, we're constantly onboarding new carriers and networks to optimize connectivity options for our customers' devices..

All this flexibility allows you to scale quickly

You've prototyped an IoT device for container shipping and you're ready to scale to 10,000 devices worldwide quickly.

Traditional SIM

If you use a traditional SIM model, you'll need to find out where each device is headed so you can order the right SIM card for it.

• After the devices are manufactured, you'll have to ensure the correct cards are installed and shipped to the corresponding customers.
• These steps add several links to your supply chain and can significantly slow down time to market.

eUICC

If you choose eUICC, you won’t need to juggle physical SIM cards in your supply chain or pre-ordain which devices are shipped to certain areas.

• Removing the additional steps allows for faster scalability and fewer opportunities for error.
• If everyone is getting the same eUICC-enabled SIM, the possibility of shipping the wrong card to the wrong customer is eliminated.

The bottom line: eUICC benefits for IoT deployments

The advantages of eUICC technology for IoT devices are clear: simplified global deployment, flexible profile management, cost optimization, streamlined carrier relationships, and accelerated scaling capabilities. These benefits work together to create a more efficient, resilient IoT infrastructure that adapts to changing business needs without the traditional constraints of physical SIM management. For organizations looking to maximize their IoT investment while minimizing operational complexity, eUICC represents a strategic advantage in an increasingly connected world.

Considering a migration to eUICC? Here are some next steps

Start by evaluating whether eUICC fits your use case. It's a great opportunity for many deployments, but traditional SIMs remain the best choice for others. Ask your team these questions:

• Would the ability to provision devices over the air (OTA) make a significant impact on efficiency and costs?
• Does your existing hardware (cellular module) support eUICC?
• Does cellular coverage in your target deployment areas support eUICC?
• What are the regulations for hosting a subscription management platform or data center in the countries where your devices are deployed?

If you’re ready to proceed but not sure if your existing devices have eUICC-capable hardware, we’ll send you a Hologram eUICC SIMso you can test your hardware’s compatibility with our platform.

Frequently asked questions

What is the difference between eUICC and eSIM?

eUICC is the software that enables remote provisioning of carrier profiles. eSIMrefers to the complete service, including the physical SIM hardware, the eUICC software, and the management platform. eUICC can run on either a traditional removable SIM card or an embedded chip soldered to a device.

What is the eUICC feature?

eUICC (Embedded Universal Integrated Circuit Card) is software that lets IoT managers provision and update a device's mobile connection profiles over the air. It eliminates the need to physically swap SIM cards when changing carriers or regions.

What is the difference between UICC and eUICC?

A traditional UICC holds one carrier profile in 64–128 KB of memory, while an eUICC has 512 KB or more and stores multiple profiles. eUICC also supports adding, removing, and switching profiles remotely without physical access to the device.

Is there any benefit to having an eSIM?

eSIM reduces plastic waste and packaging by eliminating removable SIM cards. For IoT deployments, it also simplifies manufacturing with a single hardware SKU, enables remote profile updates, and accelerates time to market by removing supply chain dependencies.