So this "SystemFQAD" is my problem it downloads apps and I don't know how I got this thing together with the app named "WeQR" which is a barcode scanner but it's just like the FQAD. It downloads some apps without permission like "Du Speed Booster", "Hola Launcher", and etc. So I didn't take it seriously first because I am so busy with other things then it installed an app called the "Ant Store". I wanted to remove it because I saw its permissions and I checked WeQR too. They have the same permissions which dowbloads and installs apps without an alert. I got an antivirus on my phone but then it doesn't detect them. So I wanted to uninstall them both but the problem is it can't be because it was pre installed. It should not be pre installed since I don't have those apps when I bought my phone. I disabled FQAD too but when I reboot my phone it keeps on enabling itself. How do I remove this things?