Run a test on webpagetest.org using Url: https://en.m.wikipedia.org/wiki/Facebook, From: New York, NY USA - Chrome - 3G with advanced settings chrome timeline enabled
When the job is finished you'll note a request to mobile.site happens after styles, startup module, central notice and jquery/mediawiki.
This shouldn't be blocking
http://www.webpagetest.org/result/150723_SY_1707/1/details/
Let's move it to the bottom of the page.