> Just to clarify, you're suggesting, go to Phone Settings, select "DJO", and then selecting "Sync Contacts". But that is a one-time

No. This isn't right. We don't use any Android settings.

Go to DejaOffice Settings, Sync Settings, Sync with Android Contacts App - Check that box.

Select Contact Account - DejaOffice or any other account.

These selections need to be active. Every time the phone synchronizes, we will be updating the ringtones in the native Contact Account. This is what sets the ringtones.

I hope this makes sense.