Here is how you can easily upgrade or reinstall the application:
Tap on the menu button of BullGuard or swipe from the left edge to the right of the screen.
Tap Uninstall and enter your BullGuard account password.
Open the Google Play Store on your device and search for "bullguard" then tap on BullGuard Mobile Security or simply open the following link on your device: www.bullguard.com/ms - this will redirect you to our app on the Play Store.
Next tap on INSTALL and read the list of resources and actions that the application currently being installed can perform or has access too. If you agree with them, tap on ACCEPT to continue.
The install process should complete in a few moments after starting it and, once finished, you can start the Mobile Security application. To run the program, tap on OPEN. If you want to start it at a later time, exit the Play Store and restart it from your applications list.