Emoji Keypad Lock Screen is a free personalization app developed by Smart Mobile Lin for Android devices. As the name suggests, it allows users to set an emoji password to unlock their device, similar to the iPhone lock screen style.

Aside from its unique emoji password feature, the app also offers a Control Center that allows users to easily control their WiFi, brightness, volume, and Bluetooth settings straight from the lock screen. It also includes a music control feature that lets users play, pause, and skip tracks without unlocking their device.

Emoji Keypad Lock Screen also allows users to customize their lock screen with beautiful wallpapers inspired by different iOS versions, including OS8, OS9, and OS10. Users can even use the app's keypad lock screen feature to design their own lock screen.

In terms of security, the app makes it easy for users to set and change their password, passcode, or PIN. They can even set a 4-digit password to enhance their phone's security. The app also shows unread messages and missed calls, and even displays message content on the lock screen.

Overall, Emoji Keypad Lock Screen is a fun and secure way to lock your Android device. It's easy to use, highly customizable, and offers a unique emoji password feature that sets it apart from other lock screen apps.