The required packages are available in ArchLinux User Repository (AUR) so it will be easier if you can use an AUR helper package like yay.
- Install following packages using yay.
- xmm7360-usb-modeswitch-git
- xmm7360-pci-utils-git
- xmm7360-pci-dkms-git
- Reboot the system
- Edit configuration at /etc/xmm7360 and set apn
- run xmm7360.service
- systemctl status xmm7360.service
- Now you should see wwan0 interface with ifconfig.
