fwiw I saw this post from João in 2021. Is it something relevant to MMS Vcard?
I am unsure if I should install syncevolution`
joao.azevedoSupport technician
unzip the file in your librem 5 phone. You might need the package unzip
for that.
cd
into the subdirectory: output
and just do: sudo apt install ./*.deb
to automagically install all the syncevolution
debs
ps. I use Thunderbird only when L5 is docked and I have a large display. TB does not work well on small phone display.