WiFi Personal Hotspot not working
Since I updated to iOS 5 the WiFi personal hotspot doesn't work. I turn on WiFi as usual, then turn on the personal hotspot. Going back to the main settings page, instead of WiFi turning to "On" it still says "Not Connected" as if I'm trying to connect my iPhone to a WiFi. I'm on the 3 UK network, but I don't think they've changed anything at their end because I can still connect via USB.
Is anyone else experiencing this problem/have a solution?
iPhone 4, iOS 5