At this moment the Fairphone 3 has no option to root the phone.
So I can’t use TitaniumBackup or Oandbackup, because both apps need root.
What is a good alternative?
This is what I would do until better options might become available …
adb backup, but I found it to be a bit unreliable for Apps, a pain to restore things, and it’s deprecated now anyway, displays a message about it with current Android SDK Platform Tools …