Mobile advertising is paid advertising that occurs on mobile phones or devices that have a wireless internet connection. Mobile ads can be display ads published on mobile websites by mobile ad networks, or can be promoted in mobile applications as in-app ads.
Mobile ad sizes
Due to the smaller screen sizes of mobile devices, mobile ads are optimized for small formats, and come in a range of sizes. The most popular mobile ad size is 300 x 250, which is a medium sized rectangle, also used widely for mobile video ads. Other common mobile ads size are the mobile banner, which is 350 x 50 and appears as a horizontal strip ad, and the large rectangle, which is 336 x 280.