How to enable a Personal Hotspot by setting APN to iPhone name
Solved - Hotspot greyed out also resolved. If above methods didn't work for you then try this.
Go to cellular->Primary-> Cellular Data Network-> Scroll Down to Hotspot and set APN to your Iphone Name.
It will also bring back Personal Hotspot if it's greyed out.
[Re-Titled by Moderator]
iPhone 15 Pro, iOS 18