I regularly create Hubs on the go using my Blackberry curve smartphone. Hubpages is optimized for mobile content creation so yes, you can create hubs on your mobile and they will be no different than hubs you create at your PC. You will not be able to edit Hubs on your mobile that have content other than text boxes. Even if the only additional content is a comment box. I'm not sure why, but that's just how it works.
What's weird about that is that Hubs created on your mobile automatically have comment boxes but can still be accessed and edited from your mobile.
Yet Hubs created using your PC with a comment box cannot be edited on your mobile...
Weird, but whatever. We can make money on the go so i'm not going to question it :p