You can install dfndr security simply follow the following steps:
1- Open the Android app store on your phone by selecting the Play Store icon.
2- Touch on the search bar at the top of the store.
3- When you open the search bar, type: “dfndr” and select the dfndr security – Privacy & Boost.
4- Select “Install“.
5- After reading the required permissions, touch “Accept“.
6- Wait for the download to complete.
Congratulations, dfndr security has been successfully installed! Open and protect your device.