Android Backupmanager Not Restoring After Uninstall Or Other Devices?

I am using the BackupManager to backup SharedPreferences to the cloud. Now this works as expected when I use it on a single device and only perform a reinstall not a full uninstall

Solution 1:

As I know from the words of Android Advocate:

Generally it seems that BackupManager is only reliable for backing up app data that will later be restored on the same device if the app is re-installed from the Play Store.

If you want to do backup syncing across multiple devices then you can try to use Google Drive API, not BackupManager, and that there is very useful session from Google I/O 2012 on the subject.