Will an unlocked iPhone work with a Softbank (Japan) sim card?

[Lantis82]

I am thinking of buying an unlocked iPhone, as I will be spending much of the next few months both in Italy and Japan. Were I to buy an Italian unlocked iPhone, would it accept a Softbank (OTCPK: SFTBF) sim card and connect to their network in Japan?

[bmx.bandit]

Yes, I think the iPhone will work with a Softbank (OTCPK: SFTBF) SIM.

However, if I remember correctly, the data features won't work - so you'll just get the phone functionality.

You will find it difficult to get a SIM without an alien registration (which takes a while to get hold of). I rented a SIM from a counter at Narita airport when I was there - from a company called Mobal.