> most scraping tasks require either desktop or mobile useragents and not both together Why? Do some sites serve completely different content? Or it's simply m

> most scraping tasks require either desktop or mobile useragents and not both together Why? Do some sites serve completely different content? Or it's simply markup differences? Have never done much scraping and I'd expect the viewport size to be the decisive factor these days, not the user agent. But, again, I don't know much about that.