The mbn files are part of the firmware which is from stock (since we don't ship firmware and that's one of the reasons you have to flash stock 10 before installing LineageOS - to get the firmware). So what's your issue exactly if your provider doesn't offer VoLTE?
I thougt it isn't offered but i just checked my roviders specs and corrected my post.
My issue is a none working mobile data connection.
Please check my attached screenshot in my post above. I've enabled mobile data but the info screen shows 'mobile data: not connected'.
@dtrunk90
If it helps i could send my logcat.
Edit:
Please be lenient - just digging into this the first time with a little of linux knowledge.
I've installed magisk manager, have root access via adb, have found the mbn's
(in ./data/vendor/modem_config/mcfg_sw/generic/euro/...
and ./vendor/firmware_mnt/image/modem_pr/mcfg/configs/mcfg_sw/generic/euro/...) but now i want to create the new dir and cpy the cfg what isn't possible because of ro filesystem
Bash:
xz2c:/ # mkdir /vendor/modemconf/S8611.1
mkdir: '/vendor/modemconf/S8611.1': Read-only file system
Does it need a rw remount?
Can you give me a hint?
thx
Edit2:
Managed do try both suggested configs but none of them fixes my mobile data issue. :-/