How to setup a USB modem with RPI3 (Of course, with OpenWrt)

[frollic]

WWAN (3G/4G/LTE and similar)

USB 4G LTE setup

Hi, on my Arcadyan router, with help of a good fellows, I manage to setup 3 ports LAN and 1 WAN. And is stable, and work well. My project is to attach a usb 4G modem. One problem is that in GUI doesn’t have USB modem. And for cmd I’m too noobian On my knees I beg you to help me! I understand (from what I read here)that this problem is a taboo but maybe someone find the Holly Graal.. Thank you!