If you want to put added security on your phone, while still making it your style, then you should definitely download this app called 'Keypad Lock - Phone Secure'.

It is a screen locker to protect your phone, and enhance security while still being able to freely customize it according to your liking. There are tons of gorgeous wallpapers that are of high quality. There are also unlock animations to make it more aesthetically pleasing!

You can set your pin code, password, date, and time just like any other screen locker. You are also able to disable and enable sound and vibration any time you want.