I got iPhone5. I kept Sony’s Xperia Android phone, but the iPhone is easier for me to use, with a wider variety of accessories sold all over the world than Sony.
I haven’t got any Softbank’s nano-SIM card, so I went to the nearest DoCoMo shop to get a DoCoMo nano-SIM card for it, but they didn’t have any. I visited some other DoCoMo shops to ask for one, but none of them had it. Without a nano-SIM card, it couldn’t be activated and it was just a small plate.
A DoCoMo shop in Tochigi-shi thankfully said they had a nano-SIM card for iPhone5, although most DoCoMo shops in Tokyo said they didn’t have any. When I drove to the shop, there were dozens of people waiting in the queue. A shop clerk said I should wait for one hour and a half to be served, but I actually waited 30 mins or so before being served. I managed to get one, put it into my iPhone I had bought before, and had it successfully activated.