A while back I made a topic about writing a tool to give rooted android users a sync tool because DQ I-III inexplicably does not support cloud saving. It turns out that Android 4.0+ has a built in back up tool, which is available to applications that allow it and it does not require root. Lucky for us, DQ I-III allows for this and it's quite simple. Because I'm lazy I'll refer you to a post that explains how to do back ups. http://forum.xda-dev...k-root-t1420351
The packages for the DQ games are:
DQ1 - com.square_enix.android_googleplay.dq1_gp
DQ2 - com.square_enix.android_googleplay.dq2_gp
DQ3 - com.square_enix.android_googleplay.dq2_gp
Alternatively, you can download an app called Helium to manage it all for you, but you'll need the paid version if you want to use cloud storage for you back ups.