[aroch]

That's what `adb backup -apk -shared -all` is for. Rootless data and app backup that can be restored after a wipe

[gtklocker]

Didn't restore most stuff for me (especially SMSs and calls) last time I tried it on my N4.

[aroch]

You don't need root to backup restore either of those -- but both are system apps, that's why their data isn't in an adb backup.