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 ...

I know it might seem like a strange request, but the current carriers have been giving out terrible quality SIM card adapters. They fall apart after a couple of insertion/removal cycles. And due to ...