Horror skull zip lock is a Zip screen lock application that could help you to lock your phone . It is very easy to use, Pull the zip to unlock the screen! Features: beautiful and perfect screen zip lock . Cool and custom skull images zipper lock theme. sound enable and disable option. lock enable and disable option. two custom theme on user choice. user friendly themeHow to use: *Tap the zip hock from top to bottom and your screen lock is open.