I've got an issue to connect to mobile LTE using mpd5 due to the following error.
Standard PPP conenction works but is slow (up to 30 Mb/s).
root@server:~ # usbconfig ugen0.3
ugen0.3: <SimTech, Incorporated SimTech, Incorporated> at usbus0, cfg=0 md=HOST spd=HIGH (480Mbps) pwr=ON (500mA)...