What is Micro SIM (Subscriber Identity Module)? - Explained

What is Micro SIM (Subscriber Identity Module)? - Explained


Micro SIM or Micro Subscriber Identity Module is the third generation SIM card type which introduced to the world. Micro SIM cards also known as 3FF or Three Form Factor SIM Cards.

Micro SIM introduced by the European Telecommunications Standards Institute (ETSI) with the 3GPP and other telecommunication giants. The major intention was by introducing the Micro SIM cards, is to reduce the space utilization inside the phone for the SIM card which had the possibility to reduce the size of the SIM card.


LengthWidthThickness
Micro SIM15.00 mm12.00 mm0.76 mm


The copper contacts arrangement and the technology was same in the Micro SIM card which was in Mini SIM Card. The very first smart phone which had a micro SIM card slot was apple iPhone 4 which released in 2010.