Yes, you can get mobile data on a tablet. The way it works is that you purchase a data plan from your cellular service provider and then use the provided SIM card in your tablet to connect to the network. There are a few different ways to get mobile data on a tablet. One option is to purchase a dedicated cellular-enabled tablet, like an iPad with LTE. Another option is to use a personal hotspot device, like the MiFi, which creates a Wi-Fi network that your tablet can connect to. And finally, you could also use an app like Google's Project Fi which allows you to share your phone's data connection with your tablet.