This basic presentation / video looks at SIM (Subscriber Identity Module) card, its evolution and what is the relation between SIM and UICC (Universal Integrated Circuit Card). It also explains ...

The SIM card ... mini-SIM or 2FF (2nd Form Factor), which has the same thickness but is 25 mm long by 15 mm wide, with one of its corners cut to prevent misinsertion. Next came micro-SIM or 3FF ...