[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 ...

and soldering them up to a SIM adapter, or directly to the card itself if you’re so inclined. The guide covers a single model of 3G modem but it’s likely the vast majority of these use a ve ...