SIMs have gone on quite an evolutionary journey since they were first introduced in the early 1990s. Get a brief history of IoT SIM form factors in the infographic below from removable SIMs to soldered SIMs and today integrated SIMs. Brush up on your knowledge today!

Resources
What IoT Leaders Really Need to Know About SGP.32
IoT connectivity now a boardroom priority for 75% of enterprises as scaling exposes operational risk, warns Eseye study
2026 State of IoT Report: Growth, Boardroom Risk and the Rise of Connectivity Orchestration
What Should You Look for in an IoT Connectivity Partner?
Eseye brings decades of end-to-end expertise to integrate and optimise IoT connectivity delivering near 100% uptime. From idea to implementation and beyond, we deliver lasting value from IoT. Nobody does IoT better.