Getting started with eUICC for your devices

Your IoT device's success hinges on reliable connectivity. And it should be simple to set up, too. So how do you optimize your IoT device setup for eUICC? This guide walks you through the fundamentals of eUICC technology, step-by-step setup instructions, and best practices to streamline your deployment, whether you're shipping to one country or scaling globally.

Why use eUICC technology

eUICC (embedded universal integrated circuit card) technology is the best way to future-proof your IoT device. eUICC enables your device to always connect reliably and seamlessly, no matter where it gets deployed. That's because eUICC-enabled eSIM cards can house multiple carrier profiles on the same card, giving you the flexibility to switch carriers as needed. (Learn more about eUICC.)

Older UICC technology limited you to a single carrier profile, installed on the SIM card at manufacture. If you wanted to connect with a new carrier, you had to physically change out the SIM card. That swap could be time consuming, or nearly impossible for devices in remote or hazardous environments. So if your carrier’s reliability slipped or data costs grew, you were stuck.

eUICC-enabled SIMs have more memory, plus an eUICC OS that controls the downloading, configuration, and management of multiple profiles. That helps your IoT device compete in a crowded market. With eUICC, you can:

• Future-proof your connectivity: No matter where your device goes, it will be able to connect to a constantly evolving carrier landscape.
• Optimize costs and coverage: Switch carriers as your needs (or regulations) change. If reliability becomes an issue or data costs skyrocket, you can easily connect a new carrier without touching the actual device.
• Simplify your supply chain and scale globally: eUICC lets you skip the headache of managing which SIM SKU goes where. Insert the same SIM in every device you manufacture and connect with carriers around the globe.

Plus, eUICC can simplify your entire setup and development process.

Simplify device setup with eUICC

eUICC simplifies device setup by letting you install one universal SIM card across your entire fleet regardless of deployment location. No more managing multiple SIM SKUs or relying on customers to report their destination accurately.

eUICC eliminates that messy sorting process.

You don't need to shuffle piles of SIM cards or maintain spreadsheets tracking IMEI numbers, carriers, and locations. Instead, insert the same SIM into every device you manufacture.

Additional hardware benefits:

• Improved durability: No SIM swaps means you can fully seal devices against water, dust, and debris.
• Smaller footprint: eUICC-enabled SIMs are compact, helping shrink device size and reduce costs.

Hologram Hyper, our eUICC-enabled SIM platform, ships with a pre-installed bootstrap profile. This profile contains a small amount of data for testing, then "sleeps" (without using any data) until reaching its final destination. When it powers on, it connects to the Hologram server, which then installs and configures the right SIM profile through the Hologram Dashboard.

How to set up your eUICC-enabled SIM card

So how do you actually go about setting up and optimizing your eUICC-enabled SIM card?

1. Install the eUICC-enabled eSIM into your device. You can solder it directly to the board to minimize your device's footprint.
2. Ship your device to your end customers, no matter where in the world they are.
3. Use the Hologram dashboard for remote SIM provisioning (RSP) to download, update, and enable the necessary profile.
4. Confirm the new profile has been successfully enabled.
5. Focus on your other priorities and delight your customers as your device enjoys seamless, reliable connectivity.

4 tips to optimize your eUICC deployment

You can streamline your eUICC deployment even further if you follow a few key best practices.

Brainstorm all your potential use cases

Before manufacturing, map out your device's full lifecycle and deployment scenarios.

• Define core use cases: What will the device do, where will it go, and how long should it last?
• Anticipate customer needs: Talk to beta testers about how they might deploy your device in unexpected ways.
• Plan for global distribution: If devices might ship to multiple countries from one supply line, eUICC simplifies your entire process.

Test connectivity by conducting a pilot

Thoroughly test your device to confirm it maintains a connection long enough to download or update eUICC profiles. Most M2M devices handle this without issue.

Note: Some CAT-M devices that prioritize battery efficiency may not stay "on" long enough for profile updates. Be sure to test this early.

Hologram can guide you through this process and provide pilot SIM cards to road test your connectivity.

Use management tools to gain insights that improve your device or processes

eUICC lets you optimize devices remotely and immediately with no technicians required. Hologram extends this with powerful fleet management via the dashboard that provides:

• Real-time visibility: Monitor device health, data usage, and connectivity status across your entire fleet.
• Remote device management: Configure settings, push updates, and troubleshoot issues without physical access.
• Flexible data routing: Send device data to your cloud platform or application via webhooks, REST API, or direct integrations.

For even deeper control, Conductor provides advanced fleet management capabilities that help you scale efficiently:

• Automated workflows: Set rules to trigger actions based on device behavior, data usage, or connectivity status, reducing manual intervention and accelerating response times.
• Change management:Track and audit configuration changes across your fleet to maintain compliance and quickly troubleshoot issues.
• API integration: Connect Conductor to your existing systems and business tools for seamless data flow and centralized management.Scalable infrastructure: Manage everything from small pilots to millions of devices with enterprise-grade reliability and security.
• Support for SGP.02 and SGP.32: Conductor supports Hologram's complete Hyper SIM lineup across both standards. Manage profile orchestration for SGP.02 SIMs and the newer SGP.32 eSIM standard using the same unified workflow and tooling.

Work with a partner with the expertise you need

The best way to optimize your device setup is to work with an experienced partner. Rather than trying to sort out the intricacies of connectivity. Working with a partner like Hologram can take the burden off your plate, so you can focus on making the best possible device.

Frequently asked questions

What is the difference between UICC and eUICC?

A traditional UICC holds one carrier profile in 64–128 KB of memory and requires physical SIM swaps to change carriers. An eUICC has 512 KB or more memory, stores multiple profiles, and allows you to add, remove, and switch profiles remotely without physical access to the device.

How does eUICC work?

eUICC is software that runs on a SIM card chip and stores multiple carrier profiles. The eUICC OS controls the downloading, configuration, and management of these profiles, enabling you to switch carriers remotely through a dashboard without touching the physical device.

What is the difference between eUICC and eSIM?

eUICC is the software that enables remote provisioning and profile management on a SIM card. eSIM refers to the complete service that includes the SIM hardware, the eUICC software, and the platform that manages network profiles.

How do you activate a Hologram eUICC-enabled SIM for the first time?

Install the eUICC-enabled SIM into your device, ship it to your end customer, then use remote SIM provisioning through the dashboard to download and enable the necessary carrier profile. The profile activates automatically once the device powers on and connects to the Hologram server.