Are they really needed for the android OS?? Still quite new to android. The only things I've been downloading are from the Play Store and I can't see android letting apps from there official store give me any viruses, can they? Also been streaming things online like movies, not exactly from things like Netflix or Hulu so idk if we can get viruses from streaming from unofficial websites. But if only downloading from the play store I'm wondering if I can save my phones storage and ram by not getting an Antivirus app.