Stopping bug: Production's css "thinks" it is a tablet... Dev platform works fine.

Stopping bug: Production's css "thinks" it is a tablet... Dev platform works fine.

  
Hello,
We have an urgent case.
We have two platforms: dev, and production. Dev platform works just fine, but after liftiming to production, the platform shows web pages as it would be a tablet mode, but it is standalone computers. 
Thus, I had to add js to template:  $('.tablet').removeClass('tablet'); But now we don't have tablet support.

Please suggest.

Thank you in advance,
Dmitry.

P.S. We use Silk UI.