This app will be very useful for you. It will allow you to have the best experience while using your phone. 

It is an easy and secure way to protect your phone data. 

App flow:

You can open the app and tap on settings to move to settings screen.

On settings screen, you can see the enable or disable lock screen checkbox. When you check the enable for the first time, you will be able to set the pattern.

Your pattern must cover at least 4 dots. When you swipe over the dots, they will glow to give you a colorful and ravishing look.

Then, you will see the confirmation option. You will have to confirm that you want to set the pattern.