You can turn on cellular data service, turn cellular service on or off, and set which apps and services use cellular data. With some carriers, you can also change your data plan.
For help with cellular network services and billing, contact your wireless service provider.
Note: Wi-Fi + Cellular models don’t support cellular phone service—they support cellular data transmission only. To make phone calls on iPad, > Cellular, tap Add a New Plan, then follow the onscreen instructions.
If you haven’t set up a plan, see Share your internet connection from iPad (Wi-Fi + Cellular) with Personal Hotspot