Very annoyingly, the iPhone also has a way for the carrier to somehow disable the mobile hotspot feature of the phone for their sim. On the mobile hotspot sett

Very annoyingly, the iPhone also has a way for the carrier to somehow disable the mobile hotspot feature of the phone for their sim. On the mobile hotspot settings page it will just show a message with a link to the carriers website instead of the toggle to enable it, I find it really annoying since as you said I don't understand how there would be a difference in what the usage would look like to the carrier and it feels like Apple is imposing a restriction just for the benefit of the carrier that makes the phone less usable.