Giesecke & Devrient says the Apple nano-SIM design for the fourth-generation SIM card prevailed over the rival offering from Nokia and its allies. Stephen Shankland worked at CNET from 1998 to 2024 ...

4FF stands for 4th Form Factor. A SIM card that is simply physically smaller than a traditional (2FF) SIM card or Micro-SIM (3FF) card. The electric contacts and circuitry of a Nano-SIM are identical ...