Why does Personal Hotspot in iOS 5 give a rotating circle instead on the on/off button?

Question

Why does Personal Hotspot in iOS 5 give a rotating circle instead on the on/off button?

Answer 1

I went to the www.att.com and found this possible solution.
WARNING! - Upgrading iPhone 4 to IOS 5 may break Tethering.. Read for solution
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10-19-201103:46:40 PM - last edited on 10-19-201103:50:09 PM
I'm talking about the PAID FOR "Personal Hotspot" AT&T feature that comes with a 4GB dataplan. If you have a Jailbroken phone then this isn't for you.... Anyway, upgraded to IOS 5 and at the worst possible time I discovered that my phone no longer had the ability to share it's over the air data with my Laptop. Restarting the phone didn't help, turning cellular data on and off didn't help and after hitting a wall I called AT&T's tech support number as I had a strong suspicion what the problem was and that they'd be able to help. Despite explaining the problem and proposing a quick fix the agent made reference to an internal memo saying there are bugs in IOS 5 and that my lack of tether was an Apple software issue and I had to call them. Frankly in this case it's VERY MUCH an AT&T provisioning issue, and one AT&T should have their techs deal with in 30 seconds rather than waste customer's time pointing fingers. After a long and frustrating attempt to get the tech to fix the problem I ended the call by CANCELLING my tether plan and going back to the "Regular" 2GB plan. Reason being hat if it's an IOS bug then it will be weeks I'm paying for service that I'm not getting, or if I was right the problem would be fixed on my next call to AT&T. For giggles I called and spent a very miserable 40 minutes dealing with Apple's IVR and nice but dim tech who was more concerned that I didn't have Apple care than anything else. That call ended with Apple saying it's not them and I should call AT&T support... However, instead of beating my head against the wall again I called SALES and asked them to add 4GB data and teher to my phone. 5 minutes later I had working tether. Problem solved. Basically to enable tether the phone has to pass a sanity check that it hasn't been tampered with, and then to activate the feature a fil is pushed down over the air to "Bless" the iPhone. I suspect as part of the IOS upgrade something went out of whack with either the file or the anti-tamper checks. Solution was to reprovision tethering, but AT&T support wouldn't hear of it. So, if you have lost tethering after an IOS 5 upgrade and AT&T support won't help then the solution is pretty painless. A) call customer service (not tech support) and CANCEL your tethering and extended dataplan. B) Turn your phone off for 5 minutes, then wait another 30 mins or so and call SALES. Ask them to add Tethering and extended data to your account. C) Wait another 30 minutes, or if you're impatient you can try turning your phone on and off again, and you'll be back in business. The down side to the is is you pay for two data plans for this month, but get a credit for the overlap next month (ie net you don't lose out). Hoping AT&T reads this and stops wasting everyone's time by enabling 1st level support to deprovision and then reprovision tether without messing with billing. We can live in hope, but until then I hope this may help someone being bounced around in a game of "Blame Tennis". Once again AT&T = All Twisted & Tangled!