Well this time I will share a way on how to install or lock application folders on Android and the advantage is that you can lock only folders or applications that you really want to keep secret and only you can open them, so not all applications will be locked. Another advantage is that you only need to delete this security application if you really forget the password and the application you previously locked will open without the need to restore it. This lightweight application (only 4 mb) is one of the most popular security lock applications or is widely downloaded by Android users and to date more than 10 million users use this application.
Now, here are the steps on how to install a supplementary lock application on Android to protect the folders on the Android you choose so that other people can’t open it besides you, before making sure you have downloaded the Leo Privacy Guard application on the Google play store.
1 Open and download the Leo Privacy Guard application on your Android phone and install it, here is the screen display of the application icon on the Google play store.
2 After the application is downloaded and installed on your Android, create the password combination you want, if it doesn’t look like the image below, click Skip. Make a minimum of 4 password combinations, that means the password uses or must pass 4 points (to be more secure you can use a password combination of more than 4 dots as shown below) Do it 2 times to make sure the password you created is correct.

3 Then open the application and you will see a display similar to the image below. A blue button with a zero means that you haven’t locked any apps yet. To start locking the application you want, you must determine what application you want with the password you created above by clicking on the blue area with a zero in the middle.

4 Then a screen similar to the one shown in the image below will appear. At this step, you only need to determine what application you want by clicking / tapping once on the application in question so that a blue tick icon appears. If the application you mean does not exist then swipe left until you find it.

5 The last step after you check all the applications you mean by pressing the Lock button. You can directly close the Leo Privacy Guard application without the need for further settings. Remember every time you want to open an application that you want other people to not be able to open then you have to enter a password combination to open it. Also remember once again if you really forget the password to open the application or folder that you want to lock then you don’t need to worry, you can simply uninstall Leo Privacy Guard without worrying about losing the application data or folders that you protect.
Now it’s easy, how do you lock an application or folder on Android that you want to protect and don’t want other people to open the contents of the Android application or folder you mean. Hopefully useful and thank you for visiting this blog website.