I guess my answer to that is I don't think retailers the most brilliant of thinkers. No, I don't know. To be serious, I can see where both arguments hold water. It's obviously a mobile phone, which, by definition I would assume would be a phone that can be used while moving from place to place. But I wouldn't categorize it as a whole as a mobile phone because it's much more.
Now you can call me STORMin' Norman, except my name isn't Norman.