Hah! Very timely.
https://phabricator.wikimedia.org/T125899

I'm pondering the same question. We are keen to lazy load content (references and images) in the mobile web experience for mediawiki

On 9 Feb 2016 8:16 a.m., "Daniel Kinzler" <daniel.kinzler@wikimedia.de> wrote:
Hi all!

For wikidata, it would be useful if we could serve different HTML for desktop
and mobile. In particular, we would like to not send all the stuff that is
needed for editing to mobile devices.

My understanding is that currently, mobile output uses separate web caches, but
shares the parser cache with the desktop version of the page. Is that correct?
And would it be feasible to also split the parser cache?

Thanks!

--
Daniel Kinzler
Senior Software Developer

Wikimedia Deutschland
Gesellschaft zur Förderung Freien Wissens e.V.