The Mobile version of your site is automatically created for you, and will be displayed to any users who view your site from a mobile device.
You can change the Mobile Theme, or turn off the mobile version completely so that the 'web version' of your site is displayed.
To turn off the mobile version of your site, click on the Settings tab, then click on the Mobile section of the Settings tab. Un-check the Box to turn off the Mobile version. Then you will also need to republish your site.
If you would like to change the Mobile version of the site, click on the Mobile icon in the upper right corner, next to the publish button.
The Mobile options for Include the option to change the color of the current Mobile Theme, or you can change the Mobile Theme completely.
You can turn the Header Images On or Off as well as the Site Search, Social Icons and the Phone Number Field.
Please Note: Currently, when you make a change to the Mobile site(other than mobile theme changes), changes such as adding a new element, editing text, uploading a new photo or anything else along those lines will change the content on the main site.
For now that is simply how the Mobile site editor and Main site editor interact with each other.