The document outlines the navigation and filtering options across multiple screens in an e-commerce mobile application. Screen 1 displays video/image files. Screen 4 allows filtering products by price, operating system, brands, and features. Selections are displayed for quick reference. Screen 5 displays filtered product results in a grid that can be added to a comparison list of up to 3 items. Screen 2 shows individual product details. Screen 3 allows comparing up to 3 selected products side by side.