There might be an option to do so in the settings for whatever browser you're using (Chrome or Safari, I assume) so that's where I would check first. If it's not in one, maybe try the other browser app on that device to see if that would be easier. Otherwise I guess the best answer is to click the button on the page that reverts to the desktop version, but I know how tedious that can be since every site designer likes to hide it in a different location somewhere on the page. XD