A hotspot is a portable device that allows you to create a personal Wi-Fi network, so you can connect your phone, laptop, and other devices to the internet while you’re on the go. Think of it like a mini Wi-Fi router that you can carry around in your pocket.
First, you need to purchase a hotspot device (also called a mobile hotspot or portable hotspot). Once you have a hotspot, you’ll need to activate the mobile hotspot feature on your phone, laptop, or other device, and then connect your device to the hotspot just like you would with any other Wi-Fi network.
Keep in mind that using a mobile hotspot can consume a lot of power and data, so it’s important to keep an eye on your usage and turn off the hotspot when you’re not using it. Also, if you’re using a mobile hotspot on your phone, make sure you have enough battery life to support it.
Source: Networking - zdnet.com