I have in my hands a Mpie M8 device (Android 5), The previous owner said it wasn't working properly and I suspected it had a virus. I factory reset it and now the phone wants desperately to install
com.google.system.s every 5 seconds even though I press cancel and even though I have WiFi off. I install it and it said that it is about locking. The phone started restarting all the time. I downloaded 360 Security and it said this is malware.
I tried to uninstall it and it said that this app is deep in my phone. I finally uninstall it (with a lots of sweat). And I have the same problem again, every 5 seconds. What is this file? What should I do?