Explains the differences between SIM card form factors: 1FF, 2FF, 3FF, and 4FF, including their dimensions, use cases, and evolution.

The mini-SIM or (2FF , 2nd form factor) card has the same contact arrangement as the full-size SIM card and is normally supplied within a full-size card carrier, attached by a number of linking pieces.

Dec 3, 2025 · There are four main SIM form factors: Standard SIM (1FF), Mini-SIM (2FF), Micro-SIM (3FF), Nano-SIM (4FF), and embedded MFF2 SIM. Each form factor differs in size and thickness, …

Dec 5, 2019 · All other types, from 2FF to 4FF, are still dominating the cellular connectivity world. These SIMs are widely accessible, relatively easy to operate with, and well supported by hardware …

Dec 10, 2021 · SIM form factors are the defined sizes produced by subscriber identity modules (SIMs). SIM form factors are classified as 1FF, 2FF, 3FF, 4FF, and MFF2. Each SIM generation is smaller …

What is the 2FF, 3FF, and 4FF form factor? The choice of SIM card size (2FF - 4FF) depends entirely on the size of the device. Also available are industrial SIM cards in the 2FF - 4FF form factors that …

The five SIM form factors are 1FF (the largest), 2FF, 3FF, 4FF and MFF2 (the smallest). Discover more about the differences between these form factors, and their suitability for various use cases.

Most newer phones utilize the smallest size, 4FF, while most routers and gateways utilize the larger 2FF size. This is not always the case, however - make sure to check the specs of your device before …

Oct 10, 2024 · Micro SIM cards are the third generation of SIM cards, and a size up from nano SIM cards. They measure in at 15 mm x 12 mm x 0.71 mm. They were first introduced back in 2003. …

emnify IoT eSIM card comes with different standard sizes or forms: Below are the dimensions of each form factor: Please find below a visual description of the removable eSIM: It is possible to select …