Click "Start." Within 10-15 seconds, you will see the classic KitKat launcher—wallpapers, icons, and all—running inside a window on your modern phone.
Inside the VM, he launches a shell script written in Dalvik bytecode—a language dead for two decades. Lines of green text crawl up the black terminal:
Overlay permission denied or GPU rendering conflict. Fix: Go to your phone settings > Apps > VMOS > Permissions > Enable "Display over other apps." Also, in VMOS settings, switch "GPU Renderer" from OpenGL to Skia.