What is an IoT SIM Card?
Unlike traditional SIM cards that connect people, IoT (Internet of Things) SIMs are designed to connect machines and devices across diverse industries. With over 15 billion connected devices worldwide—and growing—each one requires secure, resilient connectivity to operate reliably. When comparing an IoT SIM vs normal SIM, IoT SIM cards offer enhanced capabilities for continuous connectivity.
Our IoT SIM cards, such as our CSL dual SIM options, are purpose-built for connected devices, using patented roaming technology to automatically connect to the strongest available network. This ensures uninterrupted uptime and dataflow. IoT SIMs feature AES-256 encryption, ensuring your data is protected to the highest standard.

Empowering diverse industries with IoT connectivity
Critical Services
When critical operations depend on uninterrupted service, even a momentary loss of connectivity can jeopardies lives. High-stakes environments like operating rooms, airports and transportation systems rely on IoT devices to manage essential tasks with secure, always-on connections. CSL’s IoT SIM solutions provide resilient connectivity, ensuring these critical services remain online no matter what.
Utilities
When managing critical infrastructure like smart grids, renewable energy sources, and EV charging stations, even a brief connectivity failure can disrupt operations and jeopardies service delivery. Utility providers rely on CSL’s resilient IoT solutions to maintain cyber-secure, uninterrupted connections across their networks. Our IoT SIMs ensure continuous data flow for real-time monitoring, fault detection and dynamic grid management, empowering utilities to meet rising demands with efficiency and reliability.
Retail Sector
For retailers, a network outage means more than lost revenue—it can damage customer trust. Dependable connectivity is crucial for EPOS systems to keep sales flowing without interruption. Our IoT SIM solutions offer reliable cellular backup, so your business never misses a sale and maintains customer satisfaction.
Smart Motorways
The complex demands of managing traffic flow and safety on busy roadways require constant connectivity. Network disruptions can impair traffic monitoring, speed control and emergency response, leading to increased accident risks and delayed response times. We enable reliable connectivity for smart motorway systems through our IoT SIM solutions, supporting safer, smarter road management
CSL IoT SIMs
Our IoT SIMs are built for resilience, security and versatility. Using unsteered roaming technology, they ensure that your IoT devices stay online and operational. Our patented roaming algorithm can also be used within your device to enhance the connection further.
Provides a secure link for data transmission between your devices over the network, safeguarding communication.
Available as physical SIMs (2FF, 3FF, 4FF), eSIMs and eUICC that support 5G, 4G, 3G and 2G across major global mobile networks, ensuring versatile connectivity.
Allows for remote, real-time access to devices, enabling functionalities like remote viewing for enhanced monitoring.
Types of SIM cards

Ideal for larger devices with legacy technology needs, providing dependable connectivity for established systems.

Compact and suited for older smartphones and tablets, offering reliable performance in mid-sized devices.

Our smallest removable SIM, widely used in modern, space-constrained devices for efficient connectivity.

A digital SIM card embedded directly into the device, eliminating the need for a physical card and allowing for multiple carrier profiles, ideal for travelers or those who frequently switch networks.
Compare our IoT SIM cards – find the solution that fits your needs
Unlimited SIM |
Public SIM |
Private SIM | |
---|---|---|---|
4G5G | |||
Static IP | |||
Multi-Network | |||
Enhanced Troubleshooting & Diagnostics | |||
Pooled Data | |||
Management Portal | |||
Unsteered | |||
Private APN | |||
Enhanced Network & Security Features | |||
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