Not quite what I expected when I clicked on this, but anyway. I would never treat my phone as my only copy of my data. I don't consider phone storage to be permanent OR a backup. If you're into preserving your memories that are locked into your online services and apps like Google Photos, Facebook, Twitter, etc, I've started a project called Timeliner which downloads your data to your own home computers: https://gith…
The only things on my phone that I don't regularly back up are text conversations. I've seen tools that forward all your texts to a gmail account, but I'm not really looking to give all that data to Google assuming they aren't already reading them off my device.