Hi there,
I have a Sony vaio Pro 13 laptop with Intel(R) Dual Band Wireless-N 7260 adapter.
I also have the issues that my iPhone 5 hotspot is not working.
The funny thing is:
When I plug the power cable then the hotspot is working.
When I unplug and even the battery is FULLY charged the hotspot is not working.
I have several issues with this WiFi adapter but this is very stupid.
Seems that it is forbidden to use WiFi without cable...;)
That's very strange, I was installing this so naturally I was plugged in. But never thought to actually unplug it. That would be completely strange though.