I updated to iOS 10.2 this morning and my ATT hotspot is no longer working (I use it extensively and it worked last night prior to updating this morning). I called ATT to verify that everything on my account was fine and they confirmed. I get an 'Authentication Problem' message on the devices that I am trying to connect. I did the standard 'Reset Network Settings' with ATT, but alas, Hotspot still not working. Anyone else experiencing this?