A banner ad is a rectangular system-initiated ad unit, which can be either static or animated. Mobile banner ads are typically displayed on the top or bottom of the screen, sticking to the screen for the duration of the user session. Banner ads might refresh automatically after a certain period of time. Despite being the oldest form of advertising, banner advertising is highly popular on mobile apps. This is because mobile banner ads are easy to implement for app monetization purposes, and are simple and good for awareness for advertisers. Mobile banner advertising are best displayed on a range of app categories, including lifestyle apps and games.
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