Okay so basically out of nowhere the pornhub apk was downloaded into my phone. I can see it in file manager however I have not installed the app unto my phone. The problem is number one: I DO NOT want this app. Number two: The app is opening NSFW ads in EVERY SINGLE ONE OF MY APPS  Number three: I CAN NOT get rid of this app. I tried deleting this app from file manager and it just keeps on coming back. I checked to see if the app had any administrative permissions that were preventing me from deleting it but there were none. Is there any way I can fix this problem with out a factory reset? I have an LG V20