SIM Technology

More than a SIM

One IoT SIM for best-performing, global connectivity

- Custom SIM applets
- SIM-based security features
- Simplified deployment and admin
- Enhanced analytics

If technology was no object, what would your connectivity do for you?

Choose from over 15 different SIM applets, featuring blockchain, QoS, added security, and more.

Bespoke connectivity solutions for every business case.

eUICC capable SIMs, eSIMs and iSIMs

One SIM for all destinations

Automatic switching to optimal network for roaming and static devices

Embedded Universal Integrated Circuit Card (eUICC) is a software stack which facilitates remote provisioning of mobile operators over-the-air, enabling a device to switch mobile network without having to change the SIM. More than that, however, it is storage capacity that can be used to add value to your IoT project.

eSIM can refer to an ’embedded SIM’, consisting of a chip directly embedded in the device rather than using a SIM card.

It can also mean ‘enhanced SIM’, referring to the expanded hardware, firmware and SIM management functionality provided by eUICC technology.

The integrated SIM (iSIM) is the next step in the evolution of the SIM card.
The iSIM is a Tamper-Resistant Element (TRE) integral to a System on a Chip (SoC). This means a vacuum-sealed chip is soldered directly onto a processor, integrating SIM functionalities as part of the device’s existing processing hardware. This leads to a smaller, more power efficient and secure solution which seamlessly integrates with all generations of mobile networks.

Grow your business with simple SIM applets

Custom development resources on SIM

Tailored for your device or service

Developed with OEM, IoT solution owner or systems integrator

Harness the hidden power of the SIM

ZARIOT has the technical expertise to open the flexibility of telecommunications to IoT.

Complex SIM technology is no longer a hindrance to your project. We can tailor SIM applets for your device or service.

Feature-rich SIMs and partner development

Global SIMs

SIM Cards

-Widely used in standardised devices -Easily swapped in or out of a device -Simply plug in, enable, and use -3 sizes: mini, micro, nano


-Surface-mount SIM permanently soldered to the circuit board during manufacturing -Prevents physical SIM theft -Simplify manufacturing and logistics with one SKU -3 sizes: USON-8 (2x2 mm), USON-6 (3x2.3 mm), MFF2 (5x6 mm)


-Integrated into device processor -Fewer components and simplified PCB design reduce costs -70% less power consumption -20x performance enhancement -Environmentally friendly

Beecham Researh has forecast that Connected cars, Retail POS, Health monitoring, trackers and Smart Metering will represent more than 80% of the market in terms of eSIM volume in 2025