Have you ever watched a video on your tablet or phone when you aren't at home? You might have used Wi-Fi at a cafe or library to do that. But what if you want to watch a video on a road trip or a hike where you can't find Wi-Fi? That's where video over cellular comes in!
You see, your phone or tablet gets internet through either Wi-Fi or cellular networks (like 4G). When you're not at home or near a Wi-Fi network, your phone or tablet can use cellular networks to get the internet. And when you use cellular networks to watch videos (like on YouTube or Netflix), it's called video over cellular.
However, watching videos over cellular can use up a lot of data (kind of like how you might use up all the water in a bathtub if you keep the tap on for too long). And using too much data can cost a lot of money. That's why some phone plans limit how much data you can use for things like video over cellular.
But don't worry, there are ways to control how much data you use for video over cellular. You can adjust the video quality (how clear the picture is) on your video app or phone settings. Lower quality videos use less data than higher quality ones. And you can also use apps like Netflix or YouTube that let you download videos to watch later when you do have Wi-Fi.