Many people who use H5321gw have to adjust the udev rule to: https://forums.linuxmint.com/viewtopic.php?t=130708
maybe this should be done on default? Secondly i have very low connection speed and i tried all kinds of things. Is there maybe anything else i can do? options cdc_ncm prefer_mbim=N my understanding is, that with those 2 changes the modem should work fine. i can try a firmware upgrade too.