No doubt Japan loves the iPad but it was disappointing for them to know the latest update. Apple has stated clearly answered through the FAQ’s that one cannot use a micro SIM from another country for your iPad.
At the moment SoftBank who has got exclusive rights to sell iPhone 3G is providing data option for $35 per month which requires a two year commitment and about the iPad there is no such plan available. So people won’t be able to take the advantage of 3G models and use data services while traveling. The inference is simple, you can’t buy an iPad 3G models.
The lack of availability of unlocked micro SIM for the iPad has certainly lead to commotion among those who have been waiting for the 3G models. Also, you can have a look at complete story in the link given below.