everyone in the group inclusive of their stylist mizzy have iPhones IN ADDITION to their standard Japanese handphones
it's just that for Twitter , I know for a fact that DAIGO , SHINPEI & mizzy uses their iPhones to tweet . I don't know why they don't use their Japanese handphones even though my friend does it using Keitai Web / twipple
but is it a requirement knowing what they use to tweet in their accounts ? I don't think so , I don't even bother so much about it
