Device-based filtering of content items associated with mobile applications

The invention relates to methods, apparatuses and systems for filtering content items from a set of eligible content items based on a device filter. A mobile application may be incompatible with one or more devices based on an operating system, an operating system version, hardware configurations of the one or more client devices, etc. To remove incompatible content items, a device filter can be generated by comparing a set of required features for the corresponding mobile application with data from a data structure identifying several known mobile devices and associated sets of features. Theset of required features for the mobile application may include a minimum operating system version, one or more eligible countries, and/or one or more features of a mobile device. The device filter can include a set of identifiers for the known mobile devices that are incompatible with the mobile application based on the comparison. 本发明涉及基于装置过滤器来从合格的内容项目集过滤内容项目的方法、设备和系统。移动应用可能基于所述个或多个客户端装置的操作系统、操作系统版本、硬件配置等而与个或多个装置不兼容。为了移