Quality day should be beautiful or functional? Ideally, perhaps both. As, for example, LockR. It works with all launchers and has a great set of settings. Provided unlock by fingerprint, graphical key or password.

This displays a maximum of useful information, supported by widgets and player control. Provide management with gestures. There are a lot of effects and animations (blur, parallax, etc.). In addition, the locker is supported with landscape orientation.

Screen lock is made in Material Design, so deal with him is not difficult, despite the abundance of settings.

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