I’ve been looking around to find a good, privacy respecting way to sync my messages between phones. I decided I’m going to use SyncThing so I don’t have to mess around with a server. The only problem with this is that I haven’t been able to find any apps that work on modern Android that routinely backup and import messages from a file/folder into the messages database. Does anyone know any app that might do this?
While it isn’t routine, I quite like QUIK, as it allows at least manual backup of messages to a folder you set within your phone, it can be found on F-Droid, although I’m unsure if it’s within any repositories or just found within. QUIK
My apologies it isn’t exactly what you’re looking for.
That looks promising, much appreciated. I should also mention I also mean to back up MMS along with SMS.