The iPhone 5 will likely use a new smaller Nano SIM instead of the traditional Micro SIM card.
The past iPhones, you just have been able to cut a SIM card to fit a Micro SIM card slot, but it looks like users will be out of luck when it comes to cutting a Micro SIM to Nano SIM size.
Only Gizmos reports Giesecke & Devrient, the company manufacturing the new Nano SIM cards, says cutting a Micro SIM to Nano SIM size won’t work.
It turns out, as well as a smaller size, the Nano SIM is reportedly 15% thinner than the Micro SIM cards. So even if users cut the Micro SIM to Nano SIm size with a knife or nano SIM cutter tool, the Sim card would still be too thick to put in the iPhone 5.
The message from reads as follows,
As you surely know some people have cut down a “conventional” SIM (2FF) in a MicroSIM (3FF) with a knife or with a pair of scissors. Sometimes it has worked, sometimes not. Reason that this method functioned was that the 2FF and the 3FF SIM card has the same thickness. The thickness of the Nano-SIM is reduced by about 15 percent – so we think that a reducing only in size is not working.
There is always the possibility that someone will discover a way to slice 15% of the thickness of a Micro SIM off without affecting the chip inside the card, but we’ll need to wait and see.