Adb backup does not work

Question

I need help from you guys, because I don\'t know what I did wrong with adb backup.

I want to backup my Samsung Galaxy S3 LTE (GT-I9305) without root. I googled it and fou

Answer 1

Seem not all apps can be backed up. Android apparently allow apps to disable backup :(

https://developer.android.com/guide/topics/manifest/application-element.html (search for allowbackup)