Lock screen 2021 is a classic lock screen for android phones that unlocks using a zipper. Just drag down the zipper and that's it. This app comes in bright colors with abstract backgrounds and unique zipper styles. Customize your screen locker with our new lock screen to make your device cool! Would you like to unlock your phone in a really unique and customizable way? With our new Lock screen 2021, you have the option to choose your own wallpaper for the locker screen and for your device backg