Black Hole is a customizable and very functional lock screen that replaces the one build in your phone. Main features: - Pin pattern: set a pin to protect your phone - Quick access to torch - Customizable background picture; - Double tap to turn off the screen; - Notifications on screen; - Rotation; - Music controls (If you have troubles with music control and Spotify please check this tutorial: https://youtu.be/sgf0SSduaN8 )