A microsim, also known as a mini-SIM, is a smaller version of the traditional SIM card used in mobile phones. It is designed to fit into the smaller SIM card slots of modern smartphones, tablets, and other mobile devices.

Micro-SIM cards were introduced by various mobile service providers for the launch of the original iPad, and later for smartphones, from April 2010. The iPhone 4 was the first smartphone to use a micro-SIM card in June 2010, followed by many others.

Apr 25, 2017 · Defines SIM and Micro SIM, differences between the two standards, modifying a SIM card to use in compatible iPad models and more.

Compare micro SIM vs nano SIM based on size, compatibility with devices, storage and functionality, pros and cons and decide which one to choose.

What is a micro SIM card? The Micro SIM (3FF) is a compact version of the Standard SIM, featuring an identical chip in a 15mm x 12mm frame. Introduced in 2003 , it helped create more space inside phones for larger batteries and better processors.

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.

Jan 28, 2025 · Micro SIM is a smaller version of a traditional SIM card. Micro SIM was designed for such device models in which there was no place for standard SIM cards — its parameters are only 15x12mm. At the same time, Micro SIM cards retain all the basic functions necessary to ensure mobile communication.

Jan 23, 2024 · The micro SIM card, also known as the mini-UICC (Universal Integrated Circuit Card) or the 3FF (Third Form Factor) SIM card, was developed to provide a more space-efficient solution while retaining the essential functionality of its larger predecessor, the standard SIM card.

Apr 11, 2025 · What is a micro SIM card? Micro SIM cards are essentially just smaller versions of the standard SIM card , featuring the exact same chip but a smaller surface area. They measure 12 by 15mm (0.47 by 0.59”) and were first introduced back in 2003.

Mar 6, 2024 · Micro SIM cards are roughly 50% smaller than standard SIM cards, measuring 15 x 12 x 0.76 mm. Although introduced in 2003, they weren’t popularised until the release of the iPhone 4 in 2010. However, micro SIM cards are extremely rare these days, with most new phones opting for the even smaller nano SIM card.