So, I somehow found a workaround: I created a "Full Main Page" page which includes (as if it was a template) the "real" main page. Then added it as a "featured content" with the name of "Main Page (Complete)" to the Mobile Main Page. So now people can use that link to read the contents of the real main page (still with "mobile" skin, but showing the real content). Furthermore, I also added a reminder in top of the page (the "workaround" one) to tell people who are using the mobile version of the site that there is a "VIEW FULL SITE" link at the very bottom of each page, to show desktop version.