Every now and then, ill be using my android (pantech burst, if that matters) and ill get a pop up advertisement for candy crush saga or zoosk or something. It doesn't matter what im doing, it always closes the app im on (facebook, YouTube, CoD zombies, it even causes calls to drop) and its hella annoying. I deleted all my sketchy apps and even got an ad detector and it didnt find any apps causing this, so its obviously a hidden virus. I don't know how I got it, but I need to get rid of it. Any ideas?