Which device characteristics should be considered when designing a mobile app?

When designing a mobile app, it's important to consider how users interact with the device and how the app will be presented across different devices:

B. Test applications in the mobile preview. Using the mobile preview feature allows designers to test how the application will look and operate on mobile devices, ensuring usability and optimal user experience.

C. Design for finger taps. Mobile interfaces should be designed for touch interaction, with controls that are sized and spaced to accommodate finger taps, which is the primary mode of interaction on mobile devices.