How to make a decentralized Backup of your Phone:

Unified command

adb backup -apk -shared -all -f backup.ab

Or manually:

The DATA of your app's:

adb pull /data/data ~/backup/data/data

Your MANUALLY INSTALLED app's:

adb pull /data/app ~/backup/data/app

PRE-INSTALLED system-app's:

adb pull /system/app ~/backup/system/app