When you access hc1 from your smartphone, the hc1 site automatically adjusts to the smaller resolution of a mobile phone screen. Pages such as custom lists and record details are laid out vertically to accommodate the narrower phone screen size. You can scroll the page vertically to view all the information. To see this in action, take a look at the Responsive Design video.
The pages here call out processes that work differently on the smaller phone screen as opposed to the larger tablet or desktop screens. For a video demonstration of hc1 on an iPhone, check out the Day in the Life webinar, Using hc1 Mobile.