Mobile phones have limited screen size, which means that careful planning for your ad placement is especially important. Close proximity of banner ads to other elements within an app is one of the biggest causes of accidental clicks. If accidental clicks occur, publishers may see a portion of their revenue deducted in order to refund affected advertisers. Publishers may also have ad-serving suspended until the issues are resolved.
Learn how to implement banner ads the right way by watching our new best practices video.
For additional guidance, check out our Help Center. We'd also like to highlight our newest Help Center article on 300x250 banner ad guidance.
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Posted by Danielle Chang
AdMob Policy Team