I used to use TitaniumBackup to transfer apps and data from one Android phone to another when both devices are rooted. Recently I got a phone which currently does not have root access, so TitaniumBackup would not be useful. Most apps are not an issue, but I have trouble transferring a few apps and their data.
I was thinking to use adb, and tried using "adb backup -f appname.ab -apk app_package_name" on the old (and rooted) phone, but got the following error:
Now unlock your device and confirm the backup operation.
The strange thing is that there is nothing there for me to accept when I unlock the phone or when I keep the phone unlocked. Someone also had the same problem here.
Any suggestions as to how to handle the transfer? Any better alternatives?