Hi! I have been searching high and low for an answer to this question but can't locate it. Anyways, will a menu appear horizontally out-of-the-box or do I need to put in css to allow it to be formatted properly.

I have published the Mobile Menu module and the correct menu is displaying fine. However, it will only display vertically. In the Basic Options -> Layout drop-down list, I have selected 'horizontal'. However, the menu is still displaying vertically. I'm just wondering how I can get the menu to display horizontally across the page?

It changes nicely in the smartphone template but not the iphone template.....

mobile_iphone template is based on jqTouch framework and the template doesn't display horizontal menu because jqTouch has no styles for such a menu. Possible workarounds:
1) use mobile_smartphone template for iPhones too
2) develop styles for horizontal menu yourself