It sounds like you need Japanese fonts for your cell phone. Someone here might be able to help you (I probably can't), but would need to know what kind of phone it is.
Nope, they're text. Try selecting one sometime. I think at one point in time there were websites you could use as proxies that turned kanji into images for those systems lacking the fonts. I don't know if any are still around though, or if they'd work with the javascript and such going on with the review pages.