Using ADB tools for Android (my device had root), I executed the following command:
adb backup -all
After confirming the backup operation, I got a file titled backup.ab that is 350MB. A month later, my device booted with a System UI crash, and would not let me access anything on it. I got a new one (same model), and it is unrooted. What would running the command
adb restore backup.ab
restore to my Android? I want to know what is in the backup (and what restoring it would do), because I want to keep my current userdata. The new device also has a more stable system, so I would not want to restore that, either.
NOTE: This question was marked as duplicate and then ignored, so it has been deleted and reposted.