How many types of SIM cards are there? There are four main types of SIM cards on the basis of their physical size, although only the smallest retain relevancy in current times. Beyond them ...

All smartphones (and feature phones and other types of mobile phones) require a SIM card to connect to a mobile network – as, in fact, do mobile broadband devices, and any tablets that offer mobile ...

All GSM phones and most iDEN phones require a SIM card to operate. There are certain types of phones (CDMA, TDMA, AMPS) that do not use a SIM. Instead, the required data is programmed directly ...