The capabilities of each simcard form factor are the same, but they each have different dimensions, making them suitable for specific types of devices. 2FF, 3FF and 4FF simcards must be placed in a device, while MFF2 simcards that are vacuum sealed are soldered directly to the printed circuit board. That is why they are also called embedded simcards.
If you’re building a device that relies on cellular connectivity, you need to know the different simcard form factors available. As a result, you can make the best choice and design based on this choice. We take a closer look at the specifications and compare the different form factors.
Simcards come in four different forms ranging from 2FF, which is the largest simcard, to 4FF, or nano simcard, which is the newest and smallest of the simcards. In addition, there is also a built-in simcard option: the MFF2 (sim chip).