I would like to backup my phone a regular basis. TWRP provides a full system backup and recovery option. This is fine but too inflexible for me and bound to the phone itself.
I want to backup all apks and its' data from a running system (not recovery) and restore it back to the/different phone(s) with different Android Versions (6, 7.1).
This is what i already did: As far as i can say. It doesn't work.
adb backup -f /path/to/backup-file -apk -shared -all -nosystem adb restore /path/to/backup-file