New phones like the iPhone 5 are using the new nanoSIM standard. You can actually cut your microSIM or regular SIM into the nanoSIM card. You will need a razor blade, a straight edge, and some 180 grit or higher sand paper. This is a tutorial on how to do it. If you're looking for an adapter that will bring nanoSIM back to microSIM or regular SIM, check out http://nano-sim-adapter-shop.com/
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