For more than 25 years the SIM (Subscriber Identity Module) card has been fundamental in the development of mobile telecommunications. First introduced in 1991 SIMs began life about the size of a credit card and were designed to store information used to identify and authenticate users.
SIMs were also used to connect devices to 2G GSM (Global System of Mobile Communications). SIM advancements have developed in close parallel with advances in cellular network evolution – but not all SIM cards were created equal.
SIMs & IoT
The rise of IoT (Internet of Things) meant the development of a different kind of SIM. While an M2M SIM card acts similarly to a standard SIM, it does a very different job, offering features and functionalities that you won’t find on the SIM you have in your phone. Among other things, an M2M SIM allows you to monitor data usage and SIM activity, you can activate and deactivate it, and you are able lock it to a device. You can also share data across all devices and have multi-operator coverage.