Web ads, autoinstalling apps even after factory reset

[Android Central Question]

Hello i bought a chinese phone Doopro p3 just forma work (calls and whatsapp ) but the phone came with virus and even after a factory reset as soon as i connect to WiFi(before logging to google) it randomly open websites about games or sell cars or tries to download apps...
So what can i do. Its annoying

 

[Rukbat]

It's probably not a virus, it's how they make money. Unless you know how to pull the hardware interface and make AOSP run on it, there's not much you can do.