Once I turn on a hotspot in Settings > Personal Hotspot, on iOS, and a device connects, a blue banner at the top of the screen appears with the number of connected devices. I would like to see the hostname and any other associated information about the devices connected. Where could I find this information?
With a network scanner app like Net Analyzer running on your iPhone, you can see who’s connected.
BlackMagic is my iPhone 7 - the host. The other two devices are Toshiba Flashair Cards connected to my personal hotspot.
Unfortunately no GUI exists in iOS for finding details about connected devices to the wireless hotspot (i.e. tethered devices). You can use a network scanner app to find connected devices, but it is not fool proof as it will only find devices that actively respond. Usually you'll only be able to find the MAC address and the IP-address given to the unit.
Setting>Tap on the name of your Hot spot and you'll see the names of the devices connected you can then click on the names of the connected devices to remove them once you log into your iCloud account.