it's helps you to protect your phone from annoying people by locking your applications from public access. Lock for facebook working on all android devices.
It's free of charge to download the installer of Lock for facebook, also, you can have a look at users' reviews on Droid Informer. The app works fine on Android 4.1 and above. This application is completely safe to download. BlueBeen Apps is the developer of Lock for facebook which can be found in the Tools category.
The most recent update of the app was released on Jul 13, 2016 and this application was downloaded by over 100K users. Google Play shows that Lock for facebook is rated 3.6 by its users. The app contains ads.