Nano-SIM Adapters Available Ahead of iPhone 5
If you are planning to purchase an iPhone 5 you may want to order a nano-SIM adapter before it arrives.
Noosy has a three adapter set which features a nano-SIM to micro-SIM adapter, a nano-SIM to standard-SIM adapter, and a micro-SIM to standard-SIM adapter.
The adapters are available on Amazon for a few dollars. You can also grab a nano-SIM cutter if you're looking for an easy way to cut down your micro-SIM.