A device that adds 3G or 4G (LTE ... modem." While a cellular modem plugs directly into the computer, smartphones and stand-alone broadband routers convert cellular signals into a Wi-Fi hotspot ...

[Oleg Kutkov], being an experienced engineer, didn’t fret when an USA-tailored LTE modem worked poorly ... highlight would be an SIM-on-chip, essentially, a SIM card in an oh-so-popular DFN ...