We buil theme that has a responzive browser, include it for mobile. But not every user like to use and want their site has a responsive for mobile too, In this case, when you wanna deactive mobile view for your site, just take a look at style.css file.
Find codes that beginning comment / have text something like this :
/* #Responsive For tablet
Or event use comment like this :
Remove all the code start from that comment until the end, we usually put those code at the end in this file.