A Wi-Fi router is a device that allows multiple devices, like smartphones, laptops, and tablets, to connect to the internet wirelessly. It acts as a bridge between your internet service and your devices, sending and receiving data through radio waves. This means you can browse the web, stream videos, and play games without needing to plug in cables. Most Wi-Fi routers come with various features, such as security settings to protect your network and the ability to manage connected devices. They can also provide different ranges and speeds, so choosing the right one can help ensure a strong and reliable internet connection throughout your home.