Mobile Device Mode Destination Filters is in beta to all users on Business Tier plans and is exclusive to the Analytics-Swift, Analytics-Kotlin (Android), and Analytics-React-Native 2.0 libraries. 

This feature enables you to use the same interface and APIs to prevent certain data from flowing into a destination, and gives you more flexibility when working with Segment and your various marketing tools. 

For more information see the Destination Filters documentation as well as the Analytics-Swift, Analytics-Kotlin (Android), and Analytics for React Native 2.0 documentation.