A mobile interstitial is a type of advertisement that appears on a mobile device between two content pages or during a transition within an app. These ads typically cover the entire screen and require the user to interact with them before continuing to their intended destination. Mobile interstitials are often used to promote products or services and can include images, videos, or interactive elements. While they can be effective in capturing a user’s attention, they can also be disruptive and may lead to a negative user experience if not used strategically.