None of the SIMCom chipsets are currently supported. That doesn’t mean that you can’t use them, but they would require some work. It’s really hard to tell the level of effort until you plug a modem in since it could “just work” or require getting into Linux kernel drivers and usb_modeswitch. If you post a GitHub issue/PR to vintage_net_mobile, I can try to help.
At the moment, Quectel BG96 and EC25 modems are the best supported.
