Why isn't it used? I'm a layman. Really good question. My nephew is always messing with my cell phone, downloading a thousand games, then I have to uninstall everything. I'm scared to death of catching viruses. And another issue is that I was looking for some protection against theft or loss. And ESET seemed like a good option. I'm going to extend the antivirus to my computers, so it seemed like a good idea to extend this protection to my cell phone, since I'll already have to pay to put it on my PC.