While your core content may be present on the page and readily indexed by Google, if some content is visually obscured by an interstitial, it likely frustrates mobile users. Because they are unable to see it or access the content that they were expecting when they chose to click on your search result, they may quickly exit. Pages that show intrusive interstitials have been determined by Google to offer a low-quality experience to users than other pages where content is immediately reachable. This is problematic on mobile devices with tiny screens that largely or only show the annoying intrusive interstitial. Audit and find what site performance improvements you can make for mobile users. This is screaming obvious to most people, but actually providing a mobile site is the necessary first step for many who need to prepare for Google’s mobile-first index. A staggering number of businesses still lack any form of a mobile website. Getting this accomplished is vital if your lead generation activities that rely on mobile search. You need a mobile site to adequately evaluate if Interstitials are blocking content.