A free program for Android, by App lock lab.
How to Use App Lock
This is an easy-to-use, straightforward application that offers a secure, simple, and hassle-free experience for your smartphone.
Download and install the application on your phone.
When you launch the application, you will be presented with a screen that will allow you to choose from the different types of lock screen styles.
The first thing that you need to do is select the style that you prefer.
Next, you will need to enter the password or pattern that you prefer.
Once you have entered the password or pattern, you will be able to set the date and time for your lock.
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