I saw that you can get an IPad Pro with LTE, and was wondering what it was.
LTE is basically the network your cell phone runs on. So if you get a tablet with LTE, then you can use it on both WiFi and on a cell network. But, if you get LTE, you need a SIM card and a cellular plan IOT use the LTE part.
Example: my Pro 9.7 is through T-Mobile. I chose this because I'm a student and frequently need to use my tablet in areas that don't have wifi. Having a cellular plan on it is very useful because I know that no matter where I am, I always have internet access on my tablet.