drgeli - I have the same issue except the other way around. Do you have the unlimited data plan and your husband on the pay by the gig plan? I bought new iPhone 6S for both myself, my wife and daughter. My daughter and my hotspot do not work and my wife's does. Her's is the pay by the gig plan, the others are unlimited data.
Just want to be on record as another that has no personal hotspot option. My husband got his phone on 08.04.17 and his personal hotspot option works great. I got my phone on 09.04.17 and have no option. Hope it is fixed soon as this was a major selling point for me.
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