The lock Screen on Samsung Galaxy S4 giving you a plethora of customizable effects such as circles of light, lens flare, ripple effects, etc. for unlocking the device. For those who do not have a Galaxy S4 and want its brilliant lock screen on their device, they can try one of a small number of apps that do the same thing, for instance, Galaxy S4 Lock Screen.
Besides the brilliant effects it offers, this little app also provides custom fonts and a personalized text editor to add your own text on your home screen. Also, you can hide the notification bar (transparent notification bar), and provides an option to disable system lock screen to avoid multiple lock screens jumping.
Interested users can download the app free from Play Store.