Hey I'm new here and I'm new to trying to understand and become a knowledgeable user of cellphones and networking. My motivation is that my last 2 phones seem TO ME,... To be infiltrated by someone and or something and I'm almost certain if that. I've got a poco f2 pro and I'm wondering how many system apps come preinstalled because I think some mine seem to have been altered. I unknowingly purchased a USED phone thinking it as new and have had nothing but problems since