No personal hotspot option on new iPad 4g

I have recently got my new iPad WiFi + 4G. When I want to use the personal hotspot feature but it's not listed in the settings for activating. My sim card has been active and 4G works fine too. Poweed it off then on and still no personal hotspot option. Can anybody tell me what to do to resolve this issue?On your new iPad's home screen, tap Setting > General > Network. The option will magically