This is what I did; I have an N1 and an iPhone 4, and every now and then I swap my SIM into the N1. Just needed to get a MicroSIM adapter off Amazon and everyt

This is what I did; I have an N1 and an iPhone 4, and every now and then I swap my SIM into the N1. Just needed to get a MicroSIM adapter off Amazon and everything works great.