I recently got a fairphone and I want to move my pictures, contacts, messages, etc. from my old android phone to the new one. My initial search found some apps that do this but they look like absolute privacy nightmares. What is a good way to accomplish this without handing my phone contents out like candy to whichever malevolent spyware developer?
I use DAVx⁵ on my android devices, so calendar and contacts are synced to a private CalDAV/CardDAV server. (I self-host Radicale, but you could pay for such a service if you don’t want to host your own.)
Pictures should be easy, since they’re just files. Swapping microsd cards, copying to/from a computer via USB, file transfer app, KDE Connect… there are lots of options.
By messages, do you mean SMS/text? I suggest checking your old phone’s messaging app for an export feature, and trying to import it on the new phone’s messaging app. If that features is missing or incompatible between versions, maybe try one of these apps temporarily, just to get the backup/restore done:
https://f-droid.org/en/packages/com.simplemobiletools.smsmessenger/
https://f-droid.org/en/packages/org.fossify.messages/
Edit: More backup/restore options here:
https://search.f-droid.org/?q=backup