DOESNT FUNCTION. The app literally does not work in app. You go to check a check box, and it won't select. The settings won't save. I turned on SMS spam alerts, then got a spam text with a virus, and it didn't catch it. Then, there was no option other than blocking the number which I don't need robo killer to do. I can block a number myself. I don't want verifiably VIRUS CONTAINING stuff to get to me.