In Japan,we hard to buy the Sim rock free mobile phone.Because it's not popular in this country.But on the internet,that is opposite side.
We can choose "Everything" in EXPANSYS.For example,you would choose iPhone,Galaxy,Lumia,Xperia,Blackberry,and so on.It's very interesting and easy for us.
This company prepare multi language web site.Many people can use this site easily.
*There are "RADIO WAVE PROTECTION LAW" in your country.You should keep that and please be careful.
EXPANSYS
http://www.expansys.com