I have previously suggested to email me for the package, but now I made it available for download through
http://www.rottengatter.de/download/luci-app-qmi-cellstatus_1.0.0_all.ipk
So if you have an LTE or UMTS modem that runs via the QMI driver feel free to install and test it. Just download it to your OpenWRT system, and from the directory with the file run
opkg install ./luci-app-qmi-cellstatus_1.0.0_all.ipk
That's it. You may need to log out of LuCI and re-login in order to see the new entry in the Status menu.
After you've done that and checked it out I'd appreciate if you could drop me one or two lines here with your experience and suggestions.