The Battery Saver shuts down background apps to help save battery and reduce data usage. To use this function follow these steps:

1- Tap on  “Tools” in dfndr security.

2- Select “Battery Saver”

3- Select the apps you want to close by touching on the application. If you want to close all the suggested apps you can select the button on the side that says “Select All” 

4- Then touch“Hibernate App” .

* If you have any application that you do not want to close you can select the Ignore list option. To do this, click on the gear icon and select Ignore list. Then select the app that you do not want to close.