I use rsync normally but I want something similar for my Android (GrapheneOS) smartphone. I want to just click and backup everything that I set up earlier. For now I manually copy folders to one and then upload it to external drive. What are your recommendations?
Seconding this. Far faster than copying from the phone mounted the default way through MTP over USB.
If you’re used to rsync, there’s a Python wrapper that makes syncing through ADB work like rsync: https://github.com/jb2170/better-adb-sync
If you’re on Windows, I found a simple GUI for browsing the phone through adb and pushing/pulling files, useful for a one time manual backup like I just did in prep for replacing my phone: https://github.com/Alex4SSB/ADB-Explorer