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

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