4K allows users to personalize their iPhone and Apple Watch with high-quality wallpapers, backgrounds, and watch faces. Users can browse curated collections, trending content, and popular series. They can set backgrounds and watch faces.
Set custom 4K and Ultra HD for all iPhone models. Choose from dark and AMOLED themes to save battery. Access a large library of images and animations. Apply live to enhance screen appearance. Manage and replace backgrounds directly on the device.
The app offers a wallpaper collection featuring water, nature, drops, bubbles, and splash elements. It provides designed wallpapers with time and slider overlays for users to select.