JK use a Softbank flip phone don't know what model it is though his is decorated with JK the Informer
Gentaro use Lumix Phone 001P & damn its expensive & is he using Twitter?!
Kengo uses an iPhone 4s while Yuuki & Ryuusei uses an Android smartphone Ryuusei's model is look like an Aquos model
they have really cool & expensive phones why can't the US have those awesome phones that Gentaro,Ryuusei & Yuuki have