SIM card routers
SIM card
— own slot for a SIM-card of a mobile operator.As well as support for 3G / 4G modems (see the relevant paragraph), this feature allows you to use the Internet connection via mobile networks. However, the presence of a SIM slot allows you to do without the cost of buying a modem — just buy a SIM card, which usually costs a symbolic amount. On the other hand, the built-in mobile communication modules used in such routers affect the overall cost. In addition, support for mobile networks is limited by the characteristics of such a module: for example, a router for 3G networks will not be able to fully use 4G networks (whereas a USB modem can usually be changed to a more advanced one). As a result, this option is relatively rare in modern equipment.