I tried, but had no luck.
The instructions are:
On your iPhone, go to Settings > Personal Hotspot, then tap Allow Others to Join.
Optionally, you can change the Wi-Fi Password. Your Wi-Fi network name is your device name, which you can change in Settings > General > About.
I just get OS4 responses like DNS not found
Whereon OS 4 can I see a network/device to join/connect to? OS4 doesn't seem to
come with much documentation