Hello. I can make Android apps if needed. How full a transfer from an old LGMS330 running LG powered by Android 5.1.1 Lollipop to an Ubuntu LTS or Windows 10 computer can I get? I would like a raw form like just transfer files and folders and preserve all that can be preserved. I have developer options on and can make .ab backups. Purpose of this is not a full backup I can restore to that phone, purpose is to have it all accessible on computers. This device has a locked bootloader and is not rooted.

I have ADB and for it on one Windows 10 computer. I am trying to preserve some app data too but all custom apps I made have data in home, accessible. I know Android stores mtime, atime, and ctime and would like to get that off too. I found this phone does not have "stat" installed. I would rather not upgrade and risk data loss.

How much data can I get transferred? LG backup no longer works and I have data on a SIM card that I would like to keep. Do not care about timestamps on those, they are written to files. Termux won't install and pkg is not installed in Qute terminal so I can't just install coreutils and have "stat". Some data is in app data on device. I do not care about like my custom apps, I have source code. I prefer free but can do paid maybe. Personally I think rsync to Ubuntu and a .ab on a Windows computer is all I can get. I have a SIM card reader on one of like my computers. I have like 600MB free on main storage of this LGMS330.

Update:
I did a full accessible parts copy to like my Ubuntu computer including SD card and timestamps using rsync. X E.