- Do you feel bored when unlocking the dull default screens available on your phone? - Are you looking for a new way to personalize your phone with unique, cute wallpapers & beautiful lock screens? - Do you want to secure your mobile with colorful lock screen wallpapers and a variety of zipper styles? Zipper Wallpaper - Zip Lock Screen is such an interesting lock screen app designed for your Android device, providing a fun experience when you unlock phone. This app allows you to unlock your pho