Mom's phone had some popups to meet Asian girls (lol). I thought she probably clicked on some malicious ads so I installed couple of AV apps to see if anything is infected. Mbam, Avast, AVG, Clean Master didn't find anything, but CM Security found that Network Check (the icon of the app is the same as other system apps) is infected with android.troj.hideicon.ao. I can't uninstall Network Check, only disable it. I tried to boot it in safe mode, still can't uninstall. I checked if that app is listen in Phone Administrator list, it's not, only Find My Phone has Admin privileges. Did a Factory Reset, Network Check app is still present. Now, the weird thing is, when I did Factory Reset the Network Check app shows on the desktop among other installed apps. I mean, if it's a system app, why it's there? When I click on it, nothing happens, then it disappears. Is this a virus or what? How do I delete it if it is? The phone is Lenovo Vibe C2.