With the "Momanyuan" app, you can easily synchronize your favorite photos, text, QR code, to-do list, calendar and other content to the ink screen of the phone case for display. app built-in a variety of theme wallpaper, covering hot, AI boom, characters, poetry, cartoons, pets, fun, scenery, love, art and other styles for you to choose. In addition, you can select photos from the local album as a personalized wallpaper.