For change from iPhone 5 / iPad 4 / iPad mini to another Tablet / Smartphone this Adapter Set is a must. From Nano Sim MicroSim on or even normal Sim. No problem. While bringing more and more manufacturers MicroSim out products so that here an adapter actually sufficient. But Sony used for example in the Tablet S still standard SIM's, so here then the adapter is needed again. Made very valuable and it also holds.