Good to know, but with all due respect, that's not what we’re discussing here.
SM-G965F, Exynos 9810 SoC vs SM-G965W Snapdragon 845 SoC. A CSC change would render your S9+ to nothing more than a glorified paperweight. I think you'll have to forget about VoLTE for now. If everything else works, you still have an awesome phone.
CSC files are not always device specific and if you know how to change them using the appropriate files then you wont have a problem.. But again this is not a developer community and hence I am stopping here.Sorry for dragging off topic.
'it appears I have VoLTE! Although I can't find the setting anywhere"
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