When I scroll to the bottom of the website and select 'classic' view it redirects me to http://www.sharethepanda.com and the mobile version of the website looks brilliant.
Though with twentytwelve you shouldn't need any mobile version - and I'm guessing that's true for Sampression Lite too.
Right now, that is JetPack mobile showing on that view.
As to the mobile.sharethepanda.com - that's REALLY quite strange that it's showing up.
Can you try (again) to rename the plugins folder - plugins.HOLD and then check again. Also make sure you've cleared any caching on your phone.
Also, just to double-check - I just installed Sampression-Lite on a test site and it does not give me a mobile.... version - so that must be a plugin or something else going on.