I'm using Android 4.4.4 CyanogenMOD 12. My traffic is dominated by "android-system" - about half of my data usage is caused by "it" and I have no idea why it transfers data. backup (backup & restore) is turned off. I dont use any Google Service besides the play store (and very seldomly youtube). All the "android system"-traffic is background-trafic.
Is there any chance (tool/app/whatever) to find out what exactly the cause for the "android system" traffic is?
PS: - I use AFWall+ and in 3G even most of the system apps are blocked. - I do not have the "Photos" app