iOS 9 Killed My Cellular Data
I upgraded my iPhone 5s and iPad Mini 3 wi-fi + cellular this morning. Everything worked fine on wi-fi at home, but when I tried to use my phone and iPad Mini on H20 Wireless (an ATT MVNO), it said it "Could not activate cellular data network. You are not subscribed to a cellular data service." Another message says "Cellular Data Plan Usage ... There is no data remaining on your current plan. Would you like to add more data now? If you don't add now, you can do it later in Settings."
What gives? Both SIMs are activated and were in use yesterday and this morning before the iOS 9 update. Both SIMs have plenty of data dollars left (I'm on the annual Minute Plan). Interestingly, when I have Wi-Fi turned off and Cellular Data turned on and toggle the Airplane Mode switch on both devices, in the upper left corner signal strength dots appear along with the text "H2O" and "4G" briefly, then it disappears and is replaced by the name of the device.
Big time bug!
Mac mini, Mac OS X (10.7), Mid-2011 2.3 GHz Mac Mini