With mobile device rules, you can alter what gets displayed based on the device being used to access Liferay DXP. For instance, you can configure the look and feel of pages accessed by mobile device users differently from those accessed by users on a computer.
Whole Sites or individual pages can be configured for mobile device families. A family describes a group of devices. You can set rules that describe a category of devices, such as all Android devices or all iOS devices. You can define as many rules in a family as you need to classify all the devices for which you’d like to define actions. Families can be prioritized to determine which one applies to a given page request.