You actually don't even need to set up hotspot more than once if the phone and the computer are both yours (and apple-brand). You can just connect to the iPhone with the Mac (if they're on the same iCloud account) and it works without entering a password.

> Try to set up a hotspot, there is no button to turn the hotspot on/off.

There is. You can even put it on the settings drawer. Look for "personal hotspot".

I don't have a mac anymore, but IIRC you could even turn it on from the paired mac. This definitely still works between iphones. When I take out my old iphone from the drawer to use as a GPS on my bike, with no sim card, it will connect to my regular iphone's hotspot automatically.

You can find your hotspot button in the control center. Swipe down from the top right of the screen. It’s in the same section as airplane mode / WiFi / cellular data, and takes another tap to access.

> Try to set up a hotspot, there is no button to turn the hotspot on/off.

I’m confused, which button? Do Android phones come with a physical button to enable hotspot?

Just a quick shortcut