A modemu2019s basic task is to convert one network protocol into another! This means that the mode acts as a link between your Internet Service Provider (ISPu2019s) system and your system. It translates the signals from the ISPu2019s system to be understood by your system. Most modems generally allow connecting only one device. A WiFi modem allows you to connect multiple devices but the range is extremely limited.A WiFi Router, on the other hand, is a device that helps connects multiple networks together. It allows you to handle multiple devices at the same time, as well as share your internet connection. A router also boosts the signal coming from your modem and helps spread it to a bigger range, ensuring your entire house gets internet access.