Quoting Miroslav Skoric (skoric@???):

> Hello all,
>
> What is needed to install so that Devuan Jessie recognizes Huawei modems:
>
> - Huawei Mobile Connect - 3G modem (Wintendo sees it as such)
> - Huawei USB modem E3372 4G
> - Huawei Mobile Wifi router E5573C 4G

Try Web-searching for specific model numbers + 'Linux', and see if you
can find relevant tips. Maybe
https://wiki.debian.org/Modem/3G#Extra_Steps_for_the_Huawei_Cards
for the middle one, for example.

Maybe
https://unix.stackexchange.com/questions/213663/huawei-e3372s-linux-rasbian-incoming-connections-problem
for the model E3372.

Maybe https://forums.whirlpool.net.au/archive/2677153 for the model
E5573C.

I haven't read any of those in detail. I just wanted to illustrate that
you can find _possibly_ promising coverage of Linux support for, e.g.,
the Huawei E3372 by Web-searching for 'Huawei E3372 Linux' (and then, of
course, favouring more-clueful sites among search hits, e.g., the Arch
Linux wiki, Stack Exchange, etc.